Introduction:

Last week, we saw the incredible fall of Jericho, where the walls came down not because of Israel’s strength or strategy, but because they trusted and obeyed God. Today, we look at a different story—the defeat at Ai. The contrast is clear: Jericho fell through obedience, but Ai stood strong because of disobedience. How quickly victory can turn into defeat when sin is ignored. Let us read from God’s Word: 

Scripture Reading:

Joshua 7:1-26 (ESV) But the people of Israel broke faith in regard to the devoted things, for Achan the son of Carmi, son of Zabdi, son of Zerah, of the tribe of Judah, took some of the devoted things. And the anger of the LORD burned against the people of Israel.

Joshua sent men from Jericho to Ai, which is near Beth-aven, east of Bethel, and said to them, “Go up and spy out the land.” And the men went up and spied out Ai. And they returned to Joshua and said to him, “Do not have all the people go up, but let about two or three thousand men go up and attack Ai. Do not make the whole people toil up there, for they are few.” So about three thousand men went up there from the people. And they fled before the men of Ai, and the men of Ai killed about thirty-six of their men and chased them before the gate as far as Shebarim and struck them at the descent. And the hearts of the people melted and became as water.

Then Joshua tore his clothes and fell to the earth on his face before the ark of the LORD until the evening, he and the elders of Israel. And they put dust on their heads. And Joshua said, “Alas, O Lord GOD, why have you brought this people over the Jordan at all, to give us into the hands of the Amorites, to destroy us? Would that we had been content to dwell beyond the Jordan! O Lord, what can I say, when Israel has turned their backs before their enemies!  

For the Canaanites and all the inhabitants of the land will hear of it and will surround us and cut off our name from the earth. And what will you do for your great name?”

The LORD said to Joshua, “Get up! Why have you fallen on your face? Israel has sinned; they have transgressed my covenant that I commanded them; they have taken some of the devoted things; they have stolen and lied and put them among their own belongings. Therefore the people of Israel cannot stand before their enemies. They turn their backs before their enemies, because they have become devoted for destruction. I will be with you no more, unless you destroy the devoted things from among you. Get up! Consecrate the people and say, ‘Consecrate yourselves for tomorrow; for thus says the LORD, God of Israel, “There are devoted things in your midst, O Israel. You cannot stand before your enemies until you take away the devoted things from among you.” In the morning, therefore, you shall be brought near by your tribes. And the tribe that the LORD takes by lot shall come near by clans. And the clan that the LORD takes shall come near by households. And the household that the LORD takes shall come near man by man. And he who is taken with the devoted things shall be burned with fire, he and all that he has, because he has transgressed the covenant of the LORD, and because he has done an outrageous thing in Israel.’”

So Joshua rose early in the morning and brought Israel near tribe by tribe, and the tribe of Judah was taken.  And he brought near the clans of Judah, and the clan of the Zerahites was taken. And he brought near the clan of the Zerahites man by man, and Zabdi was taken. And he brought near his household man by man, and Achan the son of Carmi, son of Zabdi, son of Zerah, of the tribe of Judah, was taken. Then Joshua said to Achan, “My son, give glory to the LORD God of Israel and give praise to him. And tell me now what you have done; do not hide it from me.” And Achan answered Joshua, “Truly I have sinned against the LORD God of Israel, and this is what I did: when I saw among the spoil a beautiful cloak from Shinar, and two hundred shekels of silver, and a bar of gold weighing fifty shekels, then I coveted them and took them. And see, they are hidden in the earth inside my tent, with the silver underneath.”

So Joshua sent messengers, and they ran to the tent; and behold, it was hidden in his tent with the silver underneath. And they took them out of the tent and brought them to Joshua and to all the people of Israel. And they laid them down before the LORD. And Joshua and all Israel with him took Achan the son of Zerah, and the silver and the cloak and the bar of gold, and his sons and daughters, and his oxen and donkeys and sheep, and his tent and all that he had. And they brought them up to the Valley of Achor. And Joshua said, “Why did you bring trouble on us? The LORD brings trouble on you today.” And all Israel stoned him with stones. They burned them with fire and stoned them with stones. And they raised over him a great heap of stones that remains to this day. Then the LORD turned from his burning anger. Therefore, to this day the name of that place is called the Valley of Achor.

Opening Prayer: 

Let us bow our heads in prayer.

O Lord, our most holy and righteous God, exalt Your great and glorious name, for You are the Sovereign King of heaven and earth. Your power is infinite, Your wisdom is perfect, and Your holiness shines brighter than the sun. All creation declares Your majesty, and we join the chorus of heaven to give glory, honor, and praise to You, for You alone are worthy.

Yet, Lord, we confess that we have sinned against You in thought, word, and deed. Like Achan we have often allowed sin to creep into our hearts—hidden from the eyes of others, but ever exposed to Your all-seeing gaze. We have desired things that are not ours, we have coveted what You have forbidden, and we have broken Your holy commands. We have not walked in full obedience, and for this, we ask for Your forgiveness. Have mercy on us, O God, according to Your steadfast love, and cleanse us from all unrighteousness. Restore to us the joy of Your salvation and lead us back into right fellowship with You.

We give thanks, Father, for Your boundless mercy shown to us through Jesus Christ, our Lord. Though we deserve Your judgment, You have opened to us a door of hope through the cross. How precious is the blood of Your Son, which washes us clean from every sin! We thank You for the gift of forgiveness, the promise of restoration, and the grace that continually draws us back from the valley of sin and death. We praise You for Your Holy Spirit, who convicts us and leads us to repentance, and for Your Word, which lights our path and directs our steps.

Guide us now, Lord, as we turn to the preaching of Your Word. Let it be like a sharp sword, cutting through the hardness of our hearts and leading us into truth. May we not only hear Your Word but also live it out, transformed by Your grace and committed to a life of obedience and devotion to You.

In the precious name of Jesus Christ, we pray. Amen.

The Subtlety of Sin (Joshua 7:1–5)

As we reflected in last week’s sermon, the mighty walls of Jericho did not fall by human strength or cunning, but by the simple, obedient faith of God's people, who marched around the city as the Lord commanded. Yet, when Israel turned its sights upon the smaller, seemingly weaker city of Ai, expecting an effortless conquest, they were met with humiliating defeat. Thirty-six men of Israel died, and the hearts of the people melted like wax. How swiftly had the favor of God departed! What had caused this sudden reversal?

The answer is revealed in Joshua 7:1:  

"But the people of Israel broke faith in regard to the devoted things, for Achan... took some of the devoted things. And the anger of the Lord burned against the people of Israel."  

Here, we find that the sin of one man, Achan, brought calamity upon the entire nation. His transgression was not just theft—it was a breach of God’s covenant, a grievous act of spiritual treason. The Lord had declared that all the spoils of Jericho were either to be destroyed or consecrated to His treasury. But Achan, lured by the glitter of gold and the beauty of a Babylonian garment, fell into temptation. He saw, he coveted, he took, and he hid. His eyes were fixed on the fleeting satisfaction of his desires, blind to the devastating consequences that would ensue. Though he buried his sin beneath the earth, it was not hidden from the all-seeing eye of God. As the Scriptures remind us in Numbers 32:23, “Be sure your sin will find you out.”

Though Achan’s sin was committed in secret, its consequences spread like wildfire, bringing disaster upon the entire congregation of Israel. Thirty-six men perished in battle, their families left to mourn, and the whole nation lay under the shadow of God’s displeasure. Even Joshua, the strong and faithful leader, fell on his face before the Ark of the Covenant, crying out in sorrow and bewilderment.

We must understand that no sin is truly private. In the body of Christ, the sin of one member can affect the whole, just as a single cancerous cell can spread illness throughout the body. Similarly, hidden sin within the church weakens its strength, disrupts its unity, and grieves the Holy Spirit. It opens the door for the adversary to sow discord, division, and despair. But thanks be to God, healing and restoration are still possible! If we confess our sins, the Lord is faithful and just to forgive us and to cleanse us from all unrighteousness (1 John 1:9). Let us, therefore, bring all hidden sins into the light, that we might restore our fellowship with God and with one another.

The Severity of Sin (Joshua 7:6-26)

As we return to the account in Joshua 7, picture Joshua, Israel’s faithful leader, lying prostrate before the Ark of the Covenant. His clothes were torn in grief, dust covered his head, and his voice echoed the anguish of a leader burdened by defeat. Joshua had seen the miraculous fall of Jericho and had led Israel into the Promised Land, assured of God’s presence and victory. But now, Israel had been defeated—not by a mighty foe, but by the smallest of Canaanite cities, Ai. At this point, Joshua did not yet know the cause of their defeat. His cry was one of perplexed desperation: “O Lord God, why have You brought this people over the Jordan at all, to give us into the hands of the Amorites, to destroy us?”

Like Joshua, we often face moments when our experience seems to contradict our faith. We know God’s promises—that He will be with us and grant us victory over our enemies—yet at times, we encounter defeat. In those moments, we, too, ask, "Why?" Why does God allow trials and setbacks?

Unbeknownst to Joshua, Israel’s defeat was not due to the strength of Ai or a flaw in their strategy but the hidden sin within the camp. God revealed the true cause: “The children of Israel cannot stand before their enemies; they turn their backs because there is a curse among them.” One man, Achan, had transgressed the covenant by taking what God had declared off-limits. A Babylonian garment, two hundred shekels of silver, and a bar of gold—these treasures, hidden in his tent, were thought to be secret. But God knew. And because of one man’s disobedience, the entire nation suffered.

This should cause every heart to tremble! Sin, even when hidden, carries far-reaching consequences. Achan’s sin, though concealed in his tent, brought public shame and disaster upon all of Israel. Sin is never a private matter. It may begin in the secrecy of the heart, but it will not remain hidden.

Achan’s sin, though severe, is not unique. His temptation—the love of money, the desire for more, the lust for what is not ours—has entangled many throughout history. How many today are ensnared by the love of wealth, pursuing material gain at the cost of their relationship with God? How many sacrifice integrity, honesty, and holiness for fleeting riches? The Apostle Paul warns us in 1 Timothy 6:10: “The love of money is the root of all kinds of evil.”

The conclusion of Achan’s story is sobering. Achan, along with his family, possessions, and livestock, was taken to the Valley of Achor, where they were stoned and burned. A great heap of stones was raised as a memorial of God’s judgment. To modern sensibilities, this may seem harsh, but it underscores a crucial truth: God is holy, and He takes sin seriously. Achan’s judgment was not arbitrary but a righteous act, demonstrating the severity with which God views sin.

Some may question why Achan’s family suffered for his sin. The text does not offer a clear answer, but it illustrates a tragic reality: sin’s consequences often extend beyond the sinner. It brings pain, suffering, and loss to those around us. Whether Achan’s family was complicit or simply turned a blind eye, the message remains clear: sin affects more than just the individual. Are we harboring hidden sins, believing they won’t impact those we love? God sees all, and He will not be mocked. Sin must be confessed and forsaken, or it will bring judgment. Yet, thanks be to God, there is hope!

The Valley of Achor, the place of judgment, was later spoken of by the prophet Hosea as a place of hope:  

“I will make the Valley of Achor a door of hope.” (Hosea 2:15, ESV).  

The Valley of Achor, though a place of sorrow, can become a door of hope when we turn to God in repentance. The blood of Jesus Christ cleanses us from all sin.

As Charles Spurgeon once said:  

“God can give back our early joy, our early love, and yes, our early purity. And He can make us sing as at the beginning. Therefore, we may be of good comfort and come to our Lord—with all our sins—and He will receive us.”

The Path to Victory (Joshua 8:1-29)

After the devastating loss at Ai, Joshua and the people of Israel were left disheartened, confused, and fearful. Their confidence, which had soared after the miraculous victory at Jericho, was now shaken. Yet, in His infinite mercy, God spoke again to Joshua, saying, “Do not fear and do not be dismayed. Take all the fighting men with you, and arise, go up to Ai” (Joshua 8:1, ESV). This divine command marks a crucial turning point. The sin that had caused Israel’s defeat had been exposed and dealt with. Achan’s hidden transgression, which brought judgment on the nation, had been confessed and removed. Now, with sin cleansed from their midst, the path to victory was once again open.

Consider the contrast between the first and second attacks on Ai. In the first attack, Achan’s greed drove him to take what God had explicitly forbidden—the spoils of Jericho. Instead of trust and obedience, Achan’s desire for material gain led him into disobedience, and his actions brought disaster upon the entire nation. The consequence of one man’s sin was the defeat of many. However, in the second attack, God allowed the Israelites to take the spoils of Ai for themselves (Joshua 8:2, ESV). What Achan had unlawfully taken in Jericho could have been his legally at Ai, had he waited. This irony underscores a powerful truth: God knows exactly what we need and when we need it. His timing is perfect. Achan’s impatience and lack of trust robbed him of what could have been a blessing, teaching us the importance of waiting on the Lord and trusting that He will provide in His time. 

This lesson is vital for us today. How often do we, like Achan, grasp at things prematurely, not trusting that God will meet our needs in due time? As the Psalmist declares, “The young lions suffer want and hunger, but those who seek the Lord lack no good thing” (Psalm 34:10, ESV). Our task is to trust and wait, confident that God’s timing is always best.

More importantly, the victory at Ai reveals that triumph comes only through total obedience and wholehearted commitment to God. When Israel followed God's precise instructions and went into battle united in obedience, they achieved complete victory. They left no survivors and utterly destroyed the city, as commanded. This total obedience stands in stark contrast to Achan’s earlier disobedience, showing that victory is impossible without surrendering fully to God’s will.

Some might read this account as merely a historical record of ancient warfare—a conquest of land and cities. But the lessons reach far deeper. The battles of the Old Testament serve as spiritual metaphors for the struggles we face today. As the Apostle Paul reminds us, “We do not wrestle against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world” (Ephesians 6:12). The enemies we face are not people or cities, but the sins, temptations, and spiritual strongholds that dwell within the "Ai" of our hearts. 

Just as Joshua and the Israelites were commanded to leave none of the inhabitants of Ai alive, we are called to show no mercy to the sin that seeks to reside within us. Sin, if allowed to remain, grows like a cancer, corrupting our hearts and weakening our spiritual resolve. We must wage war against it with the same intensity and resolve that Israel displayed at Ai. There can be no compromise with sin, no partial obedience. As Paul instructs in 2 Corinthians 10:5, we are to “cast down every argument and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ.” Every sinful thought, desire, and temptation must be brought under the authority of Christ, for only then can we experience true victory.

The destruction of Ai also serves as a solemn reminder of the cost of disobedience. Joshua 8:28 tells us that Joshua burned Ai and left it a heap of ruins, desolate to this day. What was once a place of Israel’s defeat and shame had been transformed into a monument of God’s power and faithfulness. Ai, which had symbolized failure, now stood as a testament to what God can accomplish when His people repent and return to Him. It is a striking image—Ai, once a place of defeat, became a heap of desolation, a stark reminder of what happens to those who stand against God, but also a powerful testimony of what happens when sin is dealt with and obedience is restored.

For us today, the lesson is clear. We will all face an "Ai" in our spiritual journey—battles that challenge our faith and expose our weaknesses. But through repentance, obedience, and total reliance on God, our defeats can be transformed into victories. Like Israel, we must remember that victory is not won by our own strength or strategy, but by following God’s commands with full trust in His power. When we allow Him to purge the sin from our hearts and walk in obedience, He will lead us from defeat to triumph.

Let Ai serve as a lasting reminder that while sin may bring temporary defeat, repentance and obedience bring lasting victory. Through Christ, our ultimate Joshua, we have the assurance that every battle against sin and temptation can end in victory, for “thanks be to God, who gives us the victory through our Lord Jesus Christ” (1 Corinthians 15:57, ESV).

The Centrality of God’s Word in the Life of Believers (Joshua 8:30-35)

As we come to the close of Joshua 8, we see the people of Israel gathered at Mount Ebal, having tasted both the bitterness of defeat and the sweetness of victory at Ai. Here, in obedience to the Lord’s command, Joshua erects an altar of unhewn stones, offers sacrifices unto the Lord, and solemnly reads the Law of God to the entire assembly. As the people stood attentive, hearing the sacred statutes, they were reminded of God’s righteous commandments, His gracious promises, and His holy requirements.

How vital it is that we, too, give God's Word its rightful place in our lives! It is not enough for the minister alone to read and expound the Scriptures; every believer must take up the sacred volume for themselves, engaging with it diligently and devoutly. The Word of God must not be confined to the pulpit, but enshrined in our homes and cherished in our hearts. It is the sword of the Spirit, our shield against the tempter’s snare, our compass amid the world’s confusion, and our strength in the hour of trial. If the Israelites, with only a portion of God’s revelation, were called to listen so earnestly to the Law, how much more must we, who are privileged to possess the fullness of Scripture, immerse ourselves in the living Word of God!

Consider the significance of Joshua’s actions between Mount Gerizim and Mount Ebal. Mount Gerizim, the mountain of blessing, and Mount Ebal, the mountain of the curse, represent a powerful spiritual reality. These two mountains serve as eternal reminders of the duality of choice placed before each believer: the path of obedience leading to blessing, or the path of rebellion leading to cursing. Every day, we are faced with this choice. Will we walk in the light of God’s Word, or will we stray into the darkness of our own devices? Will we seek the blessings of obedience, or will we suffer the bitter consequences of disobedience? Let us, therefore, love the Lord our God with all our heart, soul, mind, and strength. Let us delight in His commandments, finding joy and life in walking according to His ways. Like the Israelites of old, let us gather around the altar of God’s Word, with ears ready to hear, hearts ready to obey, and lives that glorify our Savior. In doing so, we will experience the blessings of heaven and the favor of our gracious God.

Closing Prayer: 

Let us bow our heads in prayer.

Heavenly Father, we come before You in humility, recognizing the subtlety of sin and the seriousness with which You call us to obedience. We have heard from Your Word today, and we confess that, like Achan, there are times when we have allowed sin to creep into the hidden places of our hearts. Forgive us, Lord, for the moments when we have chosen disobedience over trust, and for the times we have pursued our desires instead of Your will.

We ask now, O Lord, that You would shine the light of Your truth into every corner of our lives. Help us to lay bare any hidden sins, to confess them before You, and to forsake them, trusting in Your promise of forgiveness and cleansing. We desire to walk in obedience, to follow Your commands, and to experience the fullness of victory that comes through faithfulness to You.

Father, strengthen us to wage war against the sin that seeks to dwell within us. Just as You led the people of Israel from defeat to victory, we trust that You will lead us as we commit ourselves to Your Word and Your ways. Help us, O God, to respond in faith, knowing that in every trial, in every battle, You are with us. We seek Your guidance and grace to walk in obedience, knowing that victory is found in You alone.

We pray all these things in the mighty and victorious name of Jesus Christ, our Lord and Savior. Amen.