Matthew 7:13-14
Enter in through the narrow gate, for wide is the gate; and spacious the way which leads to destruction, and many are they that enter in by it;
Luke 13:24
Strive to enter in by the narrow gate; for many, I tell you, shall seek to enter in, and shall not be able.
Acts 2:40
And with many other words he testified and exhorted, saying, Save yourselves from this perverse generation.
2 Corinthians 6:17
Go out therefore from among them, and be separate, says the Lord, and touch not the impure; and I will receive you,
Revelation 18:4
And I heard another voice from heaven, saying, Come out of her, my people, that you may not partake of her sins, and receive of her plagues;