21
So the Levites purified themselves and washed their garments; and Aaron presented them as a gift before the Lord, and Aaron made atonement for them to purify them.
22
And afterwards the Levites went in to minister in their service in the tabernacle of witness before Aaron, and before his sons; as the Lord appointed Moses concerning the Levites, so they did to them.
23
And the Lord spoke to Moses, saying,
24
This is the for the Levites; From five and twenty years old and upward, they shall go in to minister in the tabernacle of witness.
25
And from fifty years old shall cease from the ministry, and shall not work any longer.