Moses
Leviticus 10:19BSB·traditional attribution

But Aaron replied to Moses, “Behold, this very day they presented their sin offering and their burnt offering before the LORD. Since these things have happened to me, if I had eaten the sin offering today, would it have been acceptable in the sight of the LORD?”

Matthew Henry Presbyterian @wholebiblehenry

Moses is here directing Aaron to go on with his service after this interruption. Afflictions should rather quicken us to our duty than take us off from it. Observe (Lev 10:12), He spoke unto Aaron and to his sons that were left. The notice taken of their survivorship intimates, 1.

Commenting on Leviticus 10:12-20

John Gill Reformed Baptist @doctorgill

And when Moses heard that, he was content. He said no more, he did not proceed in blaming him and his sons, but was satisfied with the answer returned; he considered the grief and trouble of mind that attended Aaron, which might not only cause him to disregard food, but even to forget what was commanded to be done in this case; and besides he...

Geneva Bible Notes Reformed @genevanotes

And Aaron said unto Moses, Behold, this day have they offered their sin offering and their burnt offering before the LORD; and such things have befallen me: and [if] I had eaten the sin offering to day, should it have been accepted in the sight of the LORD? (g) That is, Nadab and Abihu.