Matthew 7:13-14
"Enter by the narrow gate; for broad is the gate and wide the road that leads to destruction, and many are they who go in by it;
Luke 13:24
"Struggle to enter in by the narrow door," he answered, "for I tell you that many will try to enter and not be able,
Acts 2:40
With many other words he continued to bear testimony, and kept entreating them, saying, "Save yourselves from this perverse generation."
2 Corinthians 6:17
Therefore, Come out from among them and separate yourselves, saith the Lord, touch not what is unclean;
Revelation 18:4
And behold I heard another voice from heaven saying. "Come out of her, that you have no fellowship with her sins, And that you receive not her plagues.