21. And the Levites purified themselves from sin, and they washed their garments; and Aaron offered them as a wave-offering before Jehovah; and Aaron made atonement for them to cleanse them.
22. And afterwards the Levites came in to perform their service in the tent of meeting before Aaron, and before his sons; as Jehovah had commanded Moses concerning the Levites, so did they to them.
23. And Jehovah spoke to Moses, saying,
24. This is that which concerneth the Levites: from twenty-five years old and upward shall he come to labour in the work of the service of the tent of meeting.
25. And from fifty years old he shall retire from the labour of the service, and shall serve no more;
26. but he shall minister with his brethren in the tent of meeting, and keep the charge, but he shall not serve in the service. Thus shalt thou do unto the Levites with regard to their charges.