For Aaron and his sons had scarce finished their consecration work, and were employed in their holy ministrations, from which they were not to be called for funeral solemnities. See Lev_21:1, &c.
The uncle of Aaron. See Exo_6:18Num_3:19.
Your brethren, i.e. kinsmen, as that word is oft used, as Gen_13:8 24:27. 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.