John Gills Exposition of the Bible Commentary - Leviticus 16:1
And the Lord spake unto Moses, after the death of the two sons of Aaron ,.... That is, either immediately after their death, and so this chapter would have stood in its natural order next to the tenth; or else after the above laws concerning uncleanness on various accounts were delivered out, designed to prevent the people entering into the tabernacle defiled, whereby they would have incurred the penalty of death; wherefore, as Aben Ezra observes, after the Lord had given cautions to the... read more
Matthew Henry's Complete Commentary - Leviticus 16:1-4
Here is, I. The date of this law concerning the day of atonement: it was after the death of the two sons of Aaron (Lev. 16:1), which we read, Lev. 10:1. 1. Lest Aaron should fear that any remaining guilt of that sin should cleave to his family, or (seeing the priests were so apt to offend) that some after-sin of his other sons should be the ruin of his family, he is directed how to make atonement for his house, that it might keep in with God; for the atonement for it would be the establishment... read more