Joshua 8:26

And it came to pass, when Israel had made an end of slaying all the inhabitants of Ai in the field, in the wilderness wherein they chased them, and when they were all fallen on the edge of the sword, until they were consumed, that all the Israelites returned unto Ai, and smote it with the edge of the sword.

And so it was, that all that fell that day, both of men and women, were twelve thousand, even all the men of Ai.

Only the cattle and the spoil of that city Israel took for a prey unto themselves, according unto the word of the LORD which he commanded Joshua.

And Joshua burnt Ai, and made it an heap for ever, even a desolation unto this day.