TSK · Numbers 3:6

Then Moses stood in the gate of the camp, and said, Who [is] on the LORD'S side? [let him come] unto me. And all the sons of Levi gathered themselves together unto him.

But thou shalt appoint the Levites over the tabernacle of testimony, and over all the vessels thereof, and over all things that [belong] to it: they shall bear the tabernacle, and all the vessels thereof; and they shall minister unto it, and shall encamp round about the tabernacle.

But the Levites were not numbered among the children of Israel; as the LORD commanded Moses.

For they [are] wholly given unto me from among the children of Israel; instead of such as open every womb, [even instead of] the firstborn of all the children of Israel, have I taken them unto me.

[Seemeth it but] a small thing unto you, that the God of Israel hath separated you from the congregation of Israel, to bring you near to himself to do the service of the tabernacle of the LORD, and to stand before the congregation to minister unto them?

¶ And the LORD said unto Aaron, Thou and thy sons and thy father's house with thee shall bear the iniquity of the sanctuary: and thou and thy sons with thee shall bear the iniquity of your priesthood.

And I, behold, I have taken your brethren the Levites from among the children of Israel: to you [they are] given [as] a gift for the LORD, to do the service of the tabernacle of the congregation.

At that time the LORD separated the tribe of Levi, to bear the ark of the covenant of the LORD, to stand before the LORD to minister unto him, and to bless in his name, unto this day.

And these [are] they that waited with their children. Of the sons of the Kohathites: Heman a singer, the son of Joel, the son of Shemuel,

Because their office [was] to wait on the sons of Aaron for the service of the house of the LORD, in the courts, and in the chambers, and in the purifying of all holy things, and the work of the service of the house of God;

And they set the priests in their divisions, and the Levites in their courses, for the service of God, which [is] at Jerusalem; as it is written in the book of Moses.