Deuteronomy 20:16

“So now, kill every male among the little ones, and kill every woman who has known man intimately.

“When Yahweh your God brings you into the land where you are entering to possess it, and He clears away many nations before you, the Hittites and the Girgashites and the Amorites and the Canaanites and the Perizzites and the Hivites and the Jebusites, seven nations more numerous and stronger than you,

And they devoted to destruction everything in the city, both man and woman, young and old, and ox and sheep and donkey, with the edge of the sword.

But they burned the city with fire, and all that was in it. Only the silver and gold, and articles of bronze and iron, they put into the treasury of the house of Yahweh.

“Then it will be that when you have seized the city, that you shall set the city on fire. You shall do it according to the word of Yahweh. See, I have commanded you.”

So all who fell that day, both men and women, were 12,000—all the people of Ai.

Now it happened when Joshua and the sons of Israel had finished striking them with a very great slaughter until they were completely destroyed, and the survivors—those of them who survived—had entered the fortified cities,

Now Joshua captured Makkedah on that day and struck it and its king with the edge of the sword; he devoted it to destruction and every person who was in it. He left no survivor. Thus he did to the king of Makkedah just as he had done to the king of Jericho.

Thus Joshua struck all the land—the hill country and the Negev and the Shephelah and the slopes—as well as all their kings. He left no survivor remaining, but he devoted to destruction all who breathed, just as Yahweh, the God of Israel, had commanded.

And they struck every person who was in it with the edge of the sword, devoting them to destruction; there was no one left who breathed. And he burned Hazor with fire.

And Joshua captured all the cities of these kings and all their kings, and he struck them with the edge of the sword, and he devoted them to destruction, just as Moses the servant of Yahweh had commanded.

‘Now go and strike Amalek and devote to destruction all that he has, and do not spare him; but put to death both man and woman, infant and nursing baby, ox and sheep, camel and donkey.’”

And he said, “You shall not strike them down. Would you strike down those you have taken captive with your sword and with your bow? Set bread and water before them, that they may eat and drink and walk back to their master.”