Leviticus 10:19

And Aaron said. — Though, according to Leviticus 10:16, Moses only blamed Eleazar and Ithamar for this transgression of the law, yet there can hardly be any doubt that Aaron was included in this censure, and that the lawgiver abstained from expressing his anger against the pontiff because of the supreme dignity of his office, which he would not lower in the sight of the people. Aaron, however, was fully sensible of this, and hence replies to the charge brought against his sons.

They offered their sin offering. — Before proceeding to the transgression with which they are thus charged, Aaron adverts to the fact that all the other sacrificial duties in which he and his sons were engaged on the same day, prior to the great calamity, were performed in strict accordance with the prescribed ritual. His sons assisting him had offered “their” — i.e., the people’s — sin and burnt offerings (see Leviticus 9:15) thus far in due compliance with the requirements of the law, and hence could never have meant to transgress intentionally.

And such things have befallen me. — But whilst he, Eleazar, and Ithamar were thus duly performing the sacrificial rites, Nadab and Abihu, his other two sons, transgressed, and were suddenly struck down dead, thus overwhelming the survivors with sorrow, and rendering them unfit to partake of the sacrifices.

And if I had eaten. — Aaron submits that, unfitted as they thus were by mourning and the sense of their own sinfulness, if they had partaken of this solemn meal it would not have been acceptable to the Lord. In consequence of this declaration, the rule obtained during the second Temple, that when an ordinary priest heard of the death of a relative whilst on duty in the sanctuary, he had to cease from service, though he could not leave the precincts of the Temple otherwise he defiled the sacrifice; whilst the high priest, who could continue his sacred ministrations, was not allowed to partake of the sacrificial meal.