Joshua 9:19-21

But all the leaders said to the whole congregation, “We have sworn to them by the LORD, the God of Israel, and now we cannot touch them. This we will do to them, even let them live, so that wrath will not be upon us for the oath which we swore to them.” The leaders said to them, “Let them live.” So they became hewers of wood and drawers of water for the whole congregation, just as the leaders had spoken to them.