Leviticus 10:19

Should it have been accepted? Though Moses had addressed Eleazar and Ithamar, the sons of Aaron, and rebuked them, it was the father who answered. Aaron knew that eating the sin offering represented taking the sins of the offerer upon himself, as Moses had said. But with what had happened and his own responsibility, in part, for it, he did not feel that he could bear the sin of others. He had all he could do to bear his own. He could but feel grieved at the death of his sons, and may even have felt a measure of resentment. He apparently felt that in his present state of mind his service as typical sin bearer would be quite unacceptable to God.