blessed them: i.e. according to the precept in Numbers 6:24-26. Compare Deuteronomy 10:8; Deuteronomy 21:5.
came down. Does not imply "steps", which were forbidden (Exodus 20:26). Probably. the margin or edge. See note on Exodus 27:5.
Related Commentaries of Leviticus 9:22
Leviticus 9:22
22 And Aaron lifted up his hand toward the people, and blessed them, and came down from offering of the sin offering, and the burnt offering, and peace offerings.