Acts 2:42
And they devoted themselves to the teaching of the apostles and to fellowship with one another, to the breaking of bread and to prayer.
1 Corinthians 15:33-34
Do not be so misled: "Evil companionships corrupt good character."
2 Corinthians 6:14-18
Stop forming intimate and inconsistent relations with unbelievers. What partnership can right-doing have with law-breaking, or how can light participate with darkness?
Hebrews 10:24
Let us continue so to consider one another as to stimulate one another to 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.