Contrary to what was required of true worshipers before and after the Mosaic law, Israelites during the time the Mosaic law was in force were not to eat fat. The fat of a sacrificial animal was viewed as its richest or best part, and so it could be burned on the altar as a sacrifice to God. (Lev. 3:3-5, 16) In this respect there was a similarity in how those under the Law viewed and used blood and fat. But there was also a difference. At least regarding an animal that died of itself or was killed by another beast, God’s law said that the fat could “be used for anything else conceivable, but you must not eat it at all.” Do you see the point? Though they could eat neither blood nor fat, Jehovah said that they could put fat to uses other than in sacrifice.

Lev. 7:22-27.