James 3:12

Can a fig-tree, my brethren, produce olives, or a vine figs? so can no fountain produce salt water and sweet.

Matthew 7:16-20

Ye will know them by their fruits: do men gather grapes of thorns, or figs of thistles?

Matthew 12:33

Either allow the tree to be good, and it's fruit good; or shew the tree to be corrupt, and it's fruit corrupt: for the tree is known by it's fruit.

Luke 6:43-44

For that is not a good tree which produceth bad fruit, nor is the tree bad, which produceth good fruit:

Romans 11:16-18

Now if the first-fruits be holy, so is the whole heap: and if the root be holy, so are the branches.

Treasury of Scripture Knowledge

Summary

Can the fig tree, my brethren, bear olive berries? either a vine, figs? so can no fountain both yield salt water and fresh.

Bible References

The fig tree

Matthew 7:16
Ye will know them by their fruits: do men gather grapes of thorns, or figs of thistles?
Matthew 12:33
Either allow the tree to be good, and it's fruit good; or shew the tree to be corrupt, and it's fruit corrupt: for the tree is known by it's fruit.
Luke 6:43
For that is not a good tree which produceth bad fruit, nor is the tree bad, which produceth good fruit:
Romans 11:16
Now if the first-fruits be holy, so is the whole heap: and if the root be holy, so are the branches.