Matthew 7:15
"Look out for false prophets, who come to you under the guise of sheep, but inside they are devouring wolves.
Matthew 15:5-14
But you say, 'Whoever tells his father or mother, "Everything I have that might be used for helping you, is devoted to God,"
Mark 13:14
"So when you see the destructive desecration standing where he has no right to stand" -- let the reader take notice -- "then let those who remain in Judea fly to the hills;
Mark 13:22-23
For false Christs and false prophets will announce themselves, and they will do signs and wonders to mislead, if possible, even God's chosen people.
Acts 20:30
Even from your own number men will appear who will try, by speaking perversions of truth, to draw away the disciples after them.
2 Corinthians 11:13-15
For such men are sham apostles, dishonest workmen, masquerading as apostles of Christ.
Ephesians 4:13-14
until we all attain to unity in faith and to perfect knowledge of the Son of God, namely, to a mature manhood and to a perfect measure of Christ's moral stature;
2 Thessalonians 2:8-10
Then the representative of lawlessness will be uncovered, and the Lord Jesus will destroy him with the breath of His mouth and put a stop to his operations by His appearance and coming;
1 Timothy 4:1-3
Now the Spirit distinctly declares that in later times some will turn away from the faith, because they continuously give their attention to deceiving spirits and the things that demons teach
2 Peter 2:1-3
Now there were false prophets among the people, just as there will be false teachers among you too, who will insidiously introduce destructive heresies and deny the Master who has bought them, thus bringing on themselves swift destruction.
2 Peter 3:16-18
speaking of it as he does in all his letters. In them are some things hard to understand, which the ignorant and unsteady twist to their ruin, as they do the rest of the Scriptures.
1 John 2:21
I do not write to you because you do not know it, but because you do know it.
1 John 2:27
The anointing of the Spirit which you received still remains in your hearts, and so you have no need that anyone should teach you. But just as that anointing of His teaches you about everything, and as it is true and no falsehood, and as it has taught you to do so, you must continue to live in union with Him.