1 Chronicles 15:2-4

Young's Literal Translation

² Then said David, `None [are] to carry the ark of God, except the Levites, for on them hath Jehovah fixed to carry the ark of God, and to serve Him -- unto the age.'

³ And David assembleth all Israel unto Jerusalem, to bring up the ark of Jehovah unto its place that he had prepared for it.

⁴ And David gathereth the sons of Aaron, and the Levites.