Joshua 8:3

3 So Joshua and all the fighting men set out to attack Ai. Joshua chose 30,000 of his best warriors and sent them out at night

Joshua 8:3 Meaning and Commentary

Joshua 8:3

So Joshua arose, and all the people of war, to go up against
Ai
As the Lord had commanded him:

and Joshua chose out thirty thousand mighty men of valour;
out of all the men of war; these were a select company, picked men, not the whole army, as some have thought, for he was ordered to take all the people of war, as he did:

and sent them away by night;
from the main army, that they might pass the city and get behind it undiscovered, for they were sent for an ambush; and of these some were to take the city, and be left in it to burn it, and some to smite the men of Ai, as Abarbinel notes.

Joshua 8:3 In-Context

1 Then the LORD said to Joshua, “Do not be afraid or discouraged. Take all your fighting men and attack Ai, for I have given you the king of Ai, his people, his town, and his land.

2 You will destroy them as you destroyed Jericho and its king. But this time you may keep the plunder and the livestock for yourselves. Set an ambush behind the town.”

3 So Joshua and all the fighting men set out to attack Ai. Joshua chose 30,000 of his best warriors and sent them out at night

4 with these orders: “Hide in ambush close behind the town and be ready for action.

5 When our main army attacks, the men of Ai will come out to fight as they did before, and we will run away from them.