James 3:12

My brethren, can a fig tree produce olives; or a vine, figs? Neither can salt water yield sweet.

Matthew 7:16-20

From their fruits ye shall recognize them. Do men gather grapes from thorns, or figs from thistles?

Matthew 12:33

Either make the tree good and its fruit good, or make the tree worthless and its fruit worthless; for from the fruit the tree is known.

Luke 6:43-44

"For there is no good tree that bears corrupt fruit; nor again a corrupt tree that bears good fruit;

Romans 11:16-18

And, if the first-fruit is holy, so also is the lump; and, if the root is holy, so also 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
From their fruits ye shall recognize them. Do men gather grapes from thorns, or figs from thistles?
Matthew 12:33
Either make the tree good and its fruit good, or make the tree worthless and its fruit worthless; for from the fruit the tree is known.
Luke 6:43
"For there is no good tree that bears corrupt fruit; nor again a corrupt tree that bears good fruit;
Romans 11:16
And, if the first-fruit is holy, so also is the lump; and, if the root is holy, so also are the branches.