Matthew 7:13-14
Enter in through the strait gate: for wide is the gate, and spacious the road, which leadeth to perdition, and they are many who enter that way:
Luke 13:24
Exert all your powers to enter through the strait gate: for many, I tell you, will seek to enter, but will not be able.
Acts 2:40
And with many other words he testified and exhorted, saying, Be saved from this untoward generation.
2 Corinthians 6:17
"Wherefore go forth from the midst of them, and be ye separated, saith the Lord, and touch not the unclean; and I will receive you,
Revelation 18:4
And I heard another voice from heaven, saying, Come forth out of her, my people, that ye have no share in her sins, and that so ye may not receive of her plagues.