Joshua 9:26

So they dealt with them in this manner, and Joshua saved them that day out of the hand of the Israelites, and they did not destroy them. And on that day Joshua made them hewers of wood, and drawers of water, for the whole congregation, and for the altar of God. For this cause the inhabitants of Gabaon are hewers of wood, and drawers of water, for the altar of God, even at this day, and are to be so for the place which the Lord will choose.

And they did so to them; and Joshua rescued them in that day out of the hands of the children of Israel, and they did not slay them.