ESV: When the camp is to set out, Aaron and his sons shall go in and take down the veil of the screen and cover the ark of the testimony with it.
NIV: When the camp is to move, Aaron and his sons are to go in and take down the shielding curtain and put it over the ark of the covenant law.
NASB: When the camp sets out, Aaron and his sons shall go in and take down the veil of the curtain, and cover the ark of the testimony with it;
CSB: Whenever the camp is about to move on, Aaron and his sons are to go in, take down the screening curtain, and cover the ark of the testimony with it.
NLT: When the camp moves, Aaron and his sons must enter the Tabernacle first to take down the inner curtain and cover the Ark of the Covenant with it.
KJV: And when the camp setteth forward, Aaron shall come, and his sons, and they shall take down the covering veil, and cover the ark of testimony with it:
NKJV: When the camp prepares to journey, Aaron and his sons shall come, and they shall take down the covering veil and cover the ark of the Testimony with it.