Fruit
We tend to think of "fruit" in two ways in natural language. One is as food that grows on trees and vines, sweet and delicious, and able to be eaten without harming the plant in any way. Another is as the things we produce, what our work yields for the betterment of the world. These are obviously connected: we are like trees, producing things that "feed" the world in some way, just as the tree produces fruit that feeds us. It makes sense, then, that the idea of fruit in the Bible is bound closely to the idea of goodness. Fruits that are eaten represent the desire for good and the energy to do what is good; fruit that is produced is the actual good that we go into the world and do.
Ezekiel 39:17-21
17
You, son of man, thus says the Lord Yahweh: Speak to the birds of every sort, and to every animal of the field, Assemble yourselves, and come; gather yourselves on every side to my sacrifice that I do sacrifice for you, even a great sacrifice on the mountains of Israel, that you may eat flesh and drink blood.
18
You shall eat the flesh of the mighty, and drink the blood of the princes of the earth, of rams, of lambs, and of goats, of bulls, all of them fatlings of Bashan.
19
You shall eat fat until you be full, and drink blood until you are drunk, of my sacrifice which I have sacrificed for you.
20
You shall be filled at my table with horses and chariots, with mighty men, and with all men of war, says the Lord Yahweh.
21
I will set my glory among the nations; and all the nations shall see my judgment that I have executed, and my hand that I have laid on them.
