Psalm 140:1-3
For the choirmaster. A Psalm of David. Rescue me, O LORD, from evil men. Protect me from men of violence, / who devise evil in their hearts and stir up war all day long. / They sharpen their tongues like snakes; the venom of vipers is on their lips. Selah

Romans 16:17-18
Now I urge you, brothers, to watch out for those who create divisions and obstacles that are contrary to the teaching you have learned. Turn away from them. / For such people are not serving our Lord Christ, but their own appetites. By smooth talk and flattery they deceive the hearts of the naive.

Proverbs 1:10-15
My son, if sinners entice you, do not yield to them. / If they say, “Come along, let us lie in wait for blood, let us ambush the innocent without cause, / let us swallow them alive like Sheol, and whole like those descending into the Pit. ...

1 Corinthians 15:33
Do not be deceived: “Bad company corrupts good character.”

Proverbs 6:12-14
A worthless person, a wicked man, walks with a perverse mouth, / winking his eyes, speaking with his feet, and pointing with his fingers. / With deceit in his heart he devises evil; he continually sows discord.

2 Peter 2:1-3
Now there were also false prophets among the people, just as there will be false teachers among you. They will secretly introduce destructive heresies, even denying the Master who bought them—bringing swift destruction on themselves. / Many will follow in their depravity, and because of them the way of truth will be defamed. / In their greed, these false teachers will exploit you with deceptive words. The longstanding verdict against them remains in force, and their destruction does not sleep.

Proverbs 4:14-17
Do not set foot on the path of the wicked or walk in the way of evildoers. / Avoid it; do not travel on it. Turn from it and pass on by. / For they cannot sleep unless they do evil; they are deprived of slumber until they make someone fall. ...

Matthew 7:15
Beware of false prophets. They come to you in sheep’s clothing, but inwardly they are ravenous wolves.

Proverbs 12:26
A righteous man is cautious in friendship, but the ways of the wicked lead them astray.

2 Timothy 3:13
while evil men and imposters go from bad to worse, deceiving and being deceived.

Proverbs 13:20
He who walks with the wise will become wise, but the companion of fools will be destroyed.

Ephesians 5:6-7
Let no one deceive you with empty words, for because of such things the wrath of God is coming on the sons of disobedience. / Therefore do not be partakers with them.

Proverbs 14:22
Do not those who contrive evil go astray? But those who plan goodness find loving devotion and faithfulness.

2 Corinthians 11:13-15
For such men are false apostles, deceitful workers, masquerading as apostles of Christ. / And no wonder, for Satan himself masquerades as an angel of light. / It is not surprising, then, if his servants masquerade as servants of righteousness. Their end will correspond to their actions.

Proverbs 22:24-25
Do not make friends with an angry man, and do not associate with a hot-tempered man, / or you may learn his ways and entangle yourself in a snare.