Matthew 7:13-20 (NKJV)
13 Enter by the narrow gate; for wide is the gate and broad is the way that leads to destruction, and there are many who go in by it.
14 Because narrow is the gate and difficult is the way which leads to life, and there are few who find it.
15 Beware of false prophets, who come to you in sheep’s clothing, but inwardly they are ravenous wolves.
16 You will know them by their fruits. Do men gather grapes from thorn bushes or figs from thistles?
17 Even so, every good tree bears good fruit, but a bad tree bears bad fruit.
18 A good tree cannot bear bad fruit, nor can a bad tree bear good fruit.
19 Every tree that does not bear good fruit is cut down and thrown into the fire.
20 Therefore by their fruits you will know them.