James 3:12

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

Matthew 7:16-20

By their fruits ye shall know them. Do men gather a bunch of grapes from thorns, or figs from thistles?

Matthew 12:33

Either make the tree good, and its fruit good; or make the tree corrupt, and its fruit corrupt: for the tree is known by the fruit.

Luke 6:43-44

For there is no good tree which produceth fruit of a bad quality; neither doth a tree of a bad sort produce good fruit.

Romans 11:16-18

Now if the first fruits be holy, so is the mass: 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
By their fruits ye shall know them. Do men gather a bunch of grapes from thorns, or figs from thistles?
Matthew 12:33
Either make the tree good, and its fruit good; or make the tree corrupt, and its fruit corrupt: for the tree is known by the fruit.
Luke 6:43
For there is no good tree which produceth fruit of a bad quality; neither doth a tree of a bad sort produce good fruit.
Romans 11:16
Now if the first fruits be holy, so is the mass: and if the root be holy, so are the branches.