John Wesley on Leviticus 10:4

Moses called Mishael - For Aaron and his sons were employed in their holy ministrations, from which they were not called for funeral solemnities. Brethren - That is, kinsmen, as that word is oft used. Out of the camp - Where the burying - places of the Jews were, that the living might neither be annoyed by the unwholesome scent of the dead, nor defiled by the touch of their graves.