This shall be thine of the most holy things, reserved from the fire: every oblation of their’s, every meat offering of their’s, and every sin offering of their’s, and every trespass offering of their’s which they shall render unto me, shall be most holy for thee and for thy sons. (Numbers 18:9)
Most holy things. To specify the things that appertained to the priesthood and to preserve the distinction between the “holy” and “most holy” things as set forth in Lev. 21:22.
Reserved from the fire.
That is, from the altar of burnt offerings. The priests received some things that did not come from the altar, such as the 12 loaves of shewbread, or bread of the Presence (see on Ex. 25:30; Lev. 24:5-8).
For thee and for thy sons.
These portions were to be a partial compensation for their lack of an inheritance among the tribes of Israel.