New Revised Standard Version
Thereafter the Levites may go in to do service at the tent of meeting, once you have cleansed them and presented them as an elevation offering.

Contemporary English Version
After they have been made acceptable and have been dedicated, they will be allowed to work at my sacred tent.

New American Bible
Only then shall the Levites enter upon their service in the tent of meeting, when you have cleansed them and presented them as an elevated offering.

Douay-Rheims Bible
And afterwards they shall enter into the tabernacle of the covenant, to serve me. And thus shalt thou purify and consecrate them for an oblation of the Lord: for as a gift they were given me by the children of Israel.

And afterwards they shall enter into the tabernacle of the covenant, to serve me. And thus shalt thou purify and consecrate them for an oblation of the Lord: for as a gift they were given me by the children of Israel.

go in

Numbers 8:11 And Aaron shall offer the Levites, as a gift in the sight of the Lord from the children of Israel, that they may serve in his ministry.

Numbers 3:23-37 These shall pitch behind the tabernacle on the west, . . .

Numbers 4:3-32 From thirty years old and upward, to fifty years old, of all that go in to stand and to minister in the tabernacle of the covenant. . . .

1 Chronicles 23:1 David being old and full of days, made Solomon his son king over Israel.

1 Chronicles 25:1 Moreover David and the chief officers of the army separated for the ministry the sons of Asaph, and of Heman, and of Idithun: to prophesy with harps, and with psalteries, and with cymbals according to their number serving in their appointed office.

1 Chronicles 26:1 And the divisions of the porters: of the Corites Meselemia, the son of Core, of the sons of Asaph.

and offer

Numbers 8:11,13 And Aaron shall offer the Levites, as a gift in the sight of the Lord from the children of Israel, that they may serve in his ministry. . . .

Numbers 3:12 I have taken the Levites from the children of Israel, for every firstborn that openeth the womb among the children of Israel, and the Levites shall be mine.