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

Psalm 1:1
Blessed is the man who does not walk in the counsel of the wicked, or set foot on the path of sinners, or sit in the seat of mockers.

1 Corinthians 5:11
But now I am writing you not to associate with anyone who claims to be a brother but is sexually immoral or greedy, an idolater or a verbal abuser, a drunkard or a swindler. With such a man do not even eat.

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

2 Corinthians 6:14-15
Do not be unequally yoked with unbelievers. For what partnership can righteousness have with wickedness? Or what fellowship does light have with darkness? / What harmony is there between Christ and Belial? Or what does a believer have in common with an unbeliever?

James 4:4
You adulteresses! Do you not know that friendship with the world is hostility toward God? Therefore, whoever chooses to be a friend of the world renders himself an enemy of God.

1 John 2:15-17
Do not love the world or anything in the world. If anyone loves the world, the love of the Father is not in him. / For all that is in the world—the desires of the flesh, the desires of the eyes, and the pride of life—is not from the Father but from the world. / The world is passing away, along with its desires; but whoever does the will of God remains forever.

Romans 12:2
Do not be conformed to this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what is the good, pleasing, and perfect will of God.

Ephesians 5:11
Have no fellowship with the fruitless deeds of darkness, but rather expose them.

2 Timothy 3:1-5
But understand this: In the last days terrible times will come. / For men will be lovers of themselves, lovers of money, boastful, arrogant, abusive, disobedient to their parents, ungrateful, unholy, / unloving, unforgiving, slanderous, without self-control, brutal, without love of good, ...

Psalm 26:4-5
I do not sit with deceitful men, nor keep company with hypocrites. / I hate the mob of evildoers, and refuse to sit with the wicked.

Proverbs 4:14-15
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.

1 Peter 4:3-4
For you have spent enough time in the past carrying out the same desires as the Gentiles: living in debauchery, lust, drunkenness, orgies, carousing, and detestable idolatry. / Because of this, they consider it strange of you not to plunge with them into the same flood of reckless indiscretion, and they heap abuse on you.

2 Thessalonians 3:6
Now we command you, brothers, in the name of our Lord Jesus Christ, to keep away from any brother who leads an undisciplined life that is not in keeping with the tradition you received from us.

Proverbs 14:7
Stay away from a foolish man; you will gain no knowledge from his speech.