ESV: Seven days shall they make atonement for the altar and cleanse it, and so consecrate it.
NIV: For seven days they are to make atonement for the altar and cleanse it; thus they will dedicate it.
NASB: For seven days they shall make atonement for the altar and purify it; so shall they consecrate it.
CSB: For seven days the priests are to make atonement for the altar and cleanse it. In this way they will consecrate it
NLT: Do this each day for seven days to cleanse and make atonement for the altar, thus setting it apart for holy use.
KJV: Seven days shall they purge the altar and purify it; and they shall consecrate themselves.
NKJV: Seven days they shall make atonement for the altar and purify it, and so consecrate it.