'Offerer' in the Bible

The offerer must wash its entrails and shanks with water. Then the priest will burn all of it on the altar as a burnt offering, a fire offering of a pleasing aroma to the Lord.

And you shall bring the grain [offering] that is made from these things to Yahweh, and [the offerer] shall bring it to the priest, and he shall bring it to the altar.

The offerer must present all the fat from it: the fat tail, the fat surrounding the entrails,