1 Chronicles 15:4 KJV

And David assembled the children of Aaron, and the Levites:
1 Chronicles 15:4, King James Version

In context

3 And David gathered all Israel together to Jerusalem, to bring up the ark of the Lord unto his place, which he had prepared for it.

4 And David assembled the children of Aaron, and the Levites:

5 Of the sons of Kohath; Uriel the chief, and his brethren an hundred and twenty: