Acts 2:42
And they devoted themselves to the teaching and the society of the apostles, the breaking of bread, and prayer.
1 Corinthians 15:33-34
Do not be misled. Bad company ruins character.
2 Corinthians 6:14-18
Do not get into close and incongruous relations with unbelievers. What partnership can uprightness have with iniquity, or what can light have to do with darkness?
Hebrews 10:24
By observing one another, let us arouse ourselves to rival one another's love and good deeds.
Revelation 18:4
Then I heard another voice from heaven say, "Come out of her, my people, so that you may not share in her sins, and suffer from her plagues.