²⁰ Moses, Aaron and the whole Israelite community did with the Levites just as the Lord commanded Moses. ²¹ The Levites purified themselves and washed their clothes.^(A) Then Aaron presented them as a wave offering before the Lord and made atonement^(B) for them to purify them.^{(C) 22} After that, the Levites came to do their work^(D) at the tent of meeting under the supervision of Aaron and his sons. They did with the Levites just as the Lord commanded Moses.