LXX2012(i)
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 [ordinance] 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 [the Levites] shall cease from the ministry, and shall not work any longer.
26 And his brother shall serve in the tabernacle of witness to keep charges, but he shall not do works: so shall you do to the Levites in their charges.