James 3:12

My brethren, whether is the fig-tree able to produce olives, or the vine figs? Neither is the bitter fountain able to produce sweet water.

Matthew 7:16-20

You shall know them by their fruits. Do the people gather the grape-bunches 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 beautiful tree producing corrupt fruit, nor corrupt tree producing beautiful fruit.

Romans 11:16-18

But if the first fruit was holy, the lump is also: if the root was holy, the branches are also.

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
You shall know them by their fruits. Do the people gather the grape-bunches 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 beautiful tree producing corrupt fruit, nor corrupt tree producing beautiful fruit.
Romans 11:16
But if the first fruit was holy, the lump is also: if the root was holy, the branches are also.