But Aaron and his descendants were the ones who presented offerings on the altar of burnt offering and on the altar of incense in connection with all that was done in the Most Holy Place, making atonement for Israel, in accordance with all that Moses the servant of God had commanded.
NIV
But [the line of] Aaron and his sons offered upon the altar of burnt offering and the altar of incense, ministering for all the work of the Holy of Holies, and to make atonement for Israel, according to all that Moses, God's servant, had commanded.
AMP
But Aaron and his sons offered upon the altar of the burnt offering, and on the altar of incense, and were appointed for all the work of the place most holy, and to make an atonement for Israel, according to all that Moses the servant of God had commanded.
KJV