Joshua 9:21

And the princes said unto them, Let them live, but let them be hewers of wood and drawers of water unto all the congregation; as the princes had promised them. So their lives were spared, but they were given the most menial position in Israel; they were made slaves of the Sanctuary, being obliged to perform the lowest tasks there, as servants of the entire congregation. In this way the danger of their attempting to lead Israel into idolatry was also removed. Thus the matter was decided upon and adjusted.