'Fat' in the Bible

How is the land, is it fat or lean? Are there trees in it or not? Make an effort then to get some of the fruit of the land.” Now the time was the time of the first ripe grapes.

But the firstborn of an ox or the firstborn of a sheep or the firstborn of a goat, you shall not redeem; they are holy. You shall sprinkle their blood on the altar and shall offer up their fat in smoke as an offering by fire, for a soothing aroma to the Lord.