Matthew 7:15-20

Mace(i) 15 Beware of false prophets, who to outward appearance are sheep, but inwardly they are ravenous wolves. 16 you will know them by their fruits: do men gather grapes of thorns, 17 or figs of thistles? so every good tree yields good fruit: but a corrupt tree yields bad fruit. 18 a good tree cannot produce bad fruit: neither can a corrupt tree produce good fruit. 19 every tree that doth not yield good fruit, is hewn down and cast into the fire. 20 by their fruits then shall ye know them.