Joshua — The Book of Conquest

Overview

Joshua picks up the moment Moses dies — and the new generation finally crosses the Jordan into the land God promised Abraham four centuries earlier. It is a book of military campaigns, miraculous victories, and the fulfillment of a long-delayed promise, alongside some of the Bible’s most challenging questions about conquest and justice.


Author	Joshua (with later additions)
Written	c. 1400–1370 BC
Chapters	24
Key Figures	Joshua, Rahab, Caleb, Achan
Key Themes	Conquest, faithfulness, covenant keeping, the promised land

Joshua is the account of how Israel, under its new leader Joshua, crossed the Jordan and took possession of the land God had promised to Abraham four centuries earlier. Written shortly after the events it describes, it moves through military campaigns, strategic victories, and the distribution of territory among the twelve tribes. The book's central lesson is that God's promises are reliable: what he declared to Abraham, he delivered through Joshua — and the success of the whole enterprise depended entirely on whether Israel would trust and obey.

Crossing the Jordan (Chapters 1–5)

God commissions Joshua with one of the Bible’s great encouragements: “Be strong and courageous. Do not be afraid; do not be discouraged, for the Lord your God will be with you wherever you go.”

Two spies are sent into Jericho, where a prostitute named Rahab hides them and declares her faith in Israel’s God. In exchange, she hangs a scarlet cord from her window — a mark of salvation for her household. (Rahab later appears in the genealogy of Jesus in Matthew 1.)

The Jordan River is miraculously stopped, and Israel crosses on dry ground — echoing the Red Sea crossing. Twelve stones are set up as a memorial so future generations will ask, “What do these stones mean?”

The Fall of Jericho (Chapter 6)

God’s battle plan for Jericho is unlike anything in military history: march around the city once a day for six days, seven times on the seventh day, then blow trumpets and shout. The walls collapse. Israel takes the city; only Rahab and her family are spared.

Key theme: The victory belongs to God, not military strategy. Israel’s job is obedience, not tactics.

Immediately after: A man named Achan secretly keeps some of the plunder God had forbidden. Israel’s next battle — against the tiny town of Ai — ends in humiliating defeat. Achan is found out and executed. The lesson is stark: one person’s disobedience affects the entire community.

The Conquest of Canaan (Chapters 7–12)

Joshua leads a series of campaigns across Canaan — southern and northern coalitions of Canaanite kings are defeated. The victories pile up, often with miraculous intervention:

The sun stands still during one battle, giving Israel time to finish the fight (Joshua 10:12–13 — one of the most debated passages in scripture)
City after city falls

By the end of Chapter 12, a list of 31 defeated kings is given.

The hard question: The conquest involves the destruction of Canaanite peoples, which raises serious moral questions. The text presents it as divine judgment on a people whose wickedness had reached a tipping point (Genesis 15:16 foreshadows this). It remains one of the most challenging sections of the Old Testament to wrestle with honestly.

Dividing the Land (Chapters 13–22)

The book shifts gears dramatically — from war narrative to land surveying. The Promised Land is divided among the twelve tribes by lot. It’s detailed and geographic, and admittedly slow reading — but it represents the fulfillment of a promise made to Abraham centuries earlier.

Caleb — now 85 years old, one of the two faithful spies from Numbers — asks for and receives his portion of the hill country. “I am still as strong today as the day Moses sent me out.” He remains one of the Bible’s great characters.

The cities of refuge are established — six cities where someone who accidentally kills another person can flee for safety and a fair trial. A remarkable early concept of due process.

Joshua’s Farewell (Chapters 23–24)

Like Moses before him, Joshua gathers the people for a farewell address. He recounts God’s faithfulness through history and issues a final challenge:

“Choose for yourselves this day whom you will serve… But as for me and my household, we will serve the Lord.” — Joshua 24:15

The people renew the covenant. Joshua dies at 110 years old. The era of conquest is over.

Big Themes in Joshua

Theme	Description
Promise Fulfilled	The land promised to Abraham is finally entered and settled
Courage & Faith	”Be strong and courageous” is the book’s refrain — faith requires action
Obedience Matters	Achan’s sin shows that one person’s disobedience has community consequences
God as Warrior	Victory belongs to God — human strategy is secondary
The Choice	Every generation must choose who they will serve

Key Verses

“Be strong and courageous. Do not be afraid; do not be discouraged, for the Lord your God will be with you wherever you go.” — Joshua 1:9

“As for me and my household, we will serve the Lord.” — Joshua 24:15