'Root' in the Bible

And even now the axe lieth at the root of the trees: every tree therefore that bringeth not forth good fruit is hewn down, and cast into the fire.

and when the sun was risen, they were scorched; and because they had no root, they withered away.

yet hath he not root in himself, but endureth for a while; and when tribulation or persecution ariseth because of the word, straightway he stumbleth.

But he saith, Nay; lest haply while ye gather up the tares, ye root up the wheat with them.