Numbers 4:19; Numbers 8:19; Numbers 32:16

19 "But do this to them that they may live and not die when they approach the most holy objects: Aaron and his sons shall go in and assign each of them to his work and to his load;

19 "I have given the Levites as a gift to Aaron and to his sons from among the sons of Israel, to perform the service of the sons of Israel at the tent of meeting and to make atonement on behalf of the sons of Israel, so that there will be no plague among the sons of Israel by their coming near to the sanctuary."

16 Then they came near to him and said, "We will build here sheepfolds for our livestock and cities for our little ones;