15 “Beware of false prophets who come disguised as harmless sheep but are really vicious wolves.
16 You can identify them by their fruit, that is, by the way they act. Can you pick grapes from thornbushes, or figs from thistles?
17 A good tree produces good fruit, and a bad tree produces bad fruit.
18 A good tree can’t produce bad fruit, and a bad tree can’t produce good fruit.
19 So every tree that does not produce good fruit is chopped down and thrown into the fire.
20 Yes, just as you can identify a tree by its fruit, so you can identify people by their actions.
21 “Not everyone who calls out to me, ‘Lord! Lord!’ will enter the Kingdom of Heaven. Only those who actually do the will of my Father in heaven will enter.
22 On judgment day many will say to me, ‘Lord! Lord! We prophesied in your name and cast out demons in your name and performed many miracles in your name.’
23 But I will reply, ‘I never knew you. Get away from me, you who break God’s laws.’
2 Corinthians 11:13-15 (NLT2)
13 These people are false apostles. They are deceitful workers who disguise themselves as apostles of Christ.
14 But I am not surprised! Even Satan disguises himself as an angel of light.
15 So it is no wonder that his servants also disguise themselves as servants of righteousness. In the end they will get the punishment their wicked deeds deserve.
2 Timothy 3:5-9 (NLT2)
5 They will act religious, but they will reject the power that could make them godly. Stay away from people like that!
6 They are the kind who work their way into people’s homes and win the confidence of vulnerable women who are burdened with the guilt of sin and controlled by various desires.
7 (Such women are forever following new teachings, but they are never able to understand the truth.)
8 These teachers oppose the truth just as Jannes and Jambres opposed Moses. They have depraved minds and a counterfeit faith.
9 But they won’t get away with this for long. Someday everyone will recognize what fools they are, just as with Jannes and Jambres.