'Ambush' in the Bible
You shall do to Ai and its king just as you did to Jericho and its king; you shall take only its spoil and its cattle as plunder for yourselves. Set an ambush for the city behind it.”
He commanded them, saying, “See, you are going to ambush the city from behind it. Do not go very far from the city, but all of you be ready.
And you shall rise from your ambush and take possession of the city, for the Lord your God will deliver it into your hand.
So Joshua sent them away, and they went to the place of ambush and remained between Bethel and Ai, on the west side of Ai; but Joshua spent that night among the people.
And he took about 5,000 men and set them in ambush between Bethel and Ai, on the west side of the city.
It came about when the king of Ai saw it, that the men of the city hurried and rose up early and went out to meet Israel in battle, he and all his people at the appointed place before the desert plain. But he did not know that there was an ambush against him behind the city.
The men in ambush rose quickly from their place, and when he had stretched out his hand, they ran and entered the city and captured it, and they quickly set the city on fire.
When Joshua and all Israel saw that the men in ambush had captured the city and that the smoke of the city ascended, they turned back and slew the men of Ai.