2 Corinthians 11:13-15

For such men are false apostles, deceitful workers, trans forming themselves into the apostles of Christ;

Matthew 7:15

But beware of false prophets, who come to you in sheep's clothing, but within are ravenous wolves.

Philippians 3:2

Beware of the dogs, beware of the evil workers, beware of the concision.

2 Peter 2:1-3

But there were false prophets among the people, as there will be false teachers also among you; and these will stealthily introduce ruinous sects, and deny the Lord that bought them, bringing upon themselves swift destruction:

1 John 4:1

Beloved, believe not every spirit; but prove the spirits, whether they are from God: for many false prophets have gone out into the world.

Treasury of Scripture Knowledge

Summary

Therefore hearken not unto the words of the prophets that speak unto you, saying, Ye shall not serve the king of Babylon: for they prophesy a lie unto you.

Bible References

They

Matthew 7:15
But beware of false prophets, who come to you in sheep's clothing, but within are ravenous wolves.
2 Peter 2:1
But there were false prophets among the people, as there will be false teachers also among you; and these will stealthily introduce ruinous sects, and deny the Lord that bought them, bringing upon themselves swift destruction:
1 John 4:1
Beloved, believe not every spirit; but prove the spirits, whether they are from God: for many false prophets have gone out into the world.