'Fat' in the Bible

and what the land is, whether it is fat or lean, whether there are trees in it, or not. And take courage, and bring of the fruit of the land. Now the time was the time of the first grapes.

But the firstborn of a cow, or the firstborn of a sheep, or the firstborn of a goat, thou shalt not ransom: they are holy. Thou shalt sprinkle their blood on the altar, and their fat shalt thou burn as an offering by fire for a sweet odour to Jehovah.