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 31:5-7
5
Therefore its stature was exalted above all the trees of the field; and its boughs were multiplied, and its branches became long by reason of many waters, when it shot [them] forth.
6
All the birds of the sky made their nests in its boughs; and under its branches did all the animals of the field bring forth their young; and under its shadow lived all great nations.
7
Thus was it beautiful in its greatness, in the length of its branches; for its root was by many waters.
