James 3:12

Can a fig-tree, my brethren, yield olives, or a vine yield figs? No; and neither can salt water yield sweet.

Matthew 7:16-20

By their fruits you will easily recognize them. Are grapes gathered from thorns or figs from brambles?

Matthew 12:33

"Either grant the tree to be wholesome and its fruit wholesome, or the tree poisonous and its fruit poisonous; for the tree is known by its fruit.

Luke 6:43-44

"There is no good tree that yields unsound fruit, nor again any unsound tree that yields good fruit.

Romans 11:16-18

Now if the firstfruits of the dough are holy, so also is the whole mass; and if the root of a tree 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
By their fruits you will easily recognize them. Are grapes gathered from thorns or figs from brambles?
Matthew 12:33
"Either grant the tree to be wholesome and its fruit wholesome, or the tree poisonous and its fruit poisonous; for the tree is known by its fruit.
Luke 6:43
"There is no good tree that yields unsound fruit, nor again any unsound tree that yields good fruit.
Romans 11:16
Now if the firstfruits of the dough are holy, so also is the whole mass; and if the root of a tree is holy, so also are the branches.