1 Corinthians 6:16; 1 Corinthians 14:27; 1 Corinthians 14:29

1 Corinthians 6:16

16 Or do you not know that the one who joins himself to a prostitute is one body with her? For He says, "THE TWO SHALL BECOME ONE FLESH."

1 Corinthians 14:27

27 If anyone speaks in a tongue, it should be by two or at the most three, and each in turn, and one must interpret;

1 Corinthians 14:29

29 Let two or three prophets speak, and let the others pass judgment.