Numbers Chapter 8, Verse 13

13: And thou shalt set the Levites before Aaron, and before his sons, and offer them for an offering unto the LORD.- edit KJV text
13: And thou shalt set the Levites in the sight of Aaron and of his, and shalt consecrate them being offered to the Lord,— edit Douay text
13: And thou shalt set the Levites before the Lord, and before Aaron, and before his sons; and thou shalt give them as a gift before the Lord.— edit LXX text