NET

21 In the tent of meeting outside the curtain that is before the testimony, Aaron and his sons are to arrange it from evening to morning before the Lord. This is to be a lasting ordinance among the Israelites for generations to come.

Darby

21 In the tent of meeting outside the veil, which is before the testimony, Aaron and his sons shall dress them from evening to morning before Jehovah: [it is] an everlasting statute, for their generations, on the part of the children of Israel.

KJV

21 In the tabernacle of the congregation without the vail, which [is] before the testimony, Aaron and his sons shall order it from evening to morning before the LORD: [it shall be] a statute for ever unto their generations on the behalf of the children of Israel.