Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit. A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit. Every tree that bringeth not forth good fruit is hewn down, and cast into the fire. Wherefore by their fruits ye shall know them.
The lives, fruit, and teaching of false teachers betray them. A tree produces fruit according to its character. A good tree bears good fruit and a bad tree bears bad fruit. This principle is true in both the natural and spiritual world. God’s Word is what everyone’s fruit is to be tested by.