said unto Aaron. Showing that Aaron did not take this honour upon himself. Heb_5:4, Heb_5:5.
offer = prepare. Hebrew. 'asah.App-43.
thy sin offering. Ancient Jewish interpretation refers this "calf" (Lev_9:8) to the sin of the golden calf. The People's share in that sin is referred to in Lev_9:15. Compare Ex. Lev_32:35, "they made (Exo_32:1) the calf which Aaron made" (Lev_9:4).
make an atonement. See note on Exo_29:33. Compare Exo_28:41.