15Watch out from the false prophets who come to you in sheep's clothing; inwardly, however, they are rapacious wolves.16You will come to know them from their fruit. Surely they do not gather grapes from thorns or figs from thistles?17Thus every good tree produces good fruit, while the rotten tree produces evil fruit.18A good tree cannot produce evil fruit, nor can a rotten tree produce good fruit.19Every tree not producing good fruit is cut down and thrown into the fire.20Therefore indeed you will come to know them from their fruit.21Not everyone saying to me, 'Lord, Lord,' will enter the kingdom of the heavens, but the one doing the will of my Father who is in the heavens.22Many will say to me on that day, 'Lord, Lord, did we not prophesy in your name, and in your name cast out demons, and in your name perform many powers?'23And then I will confess to them, 'I never knew you; depart from me, you who work lawlessness.'