1 Corinthians 6:16; 1 Corinthians 11:27; 1 Corinthians 14:9; 1 Corinthians 14:11

16 What? know ye not that he which is joined to an harlot is one body? for two, saith he , shall be one flesh.
27 Wherefore whosoever shall eat this bread, and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord.
9 So likewise ye, except ye utter by the tongue words easy to be understood, how shall it be known what is spoken ? for ye shall speak into the air.
11 Therefore if I know not the meaning of the voice, I shall be unto him that speaketh a barbarian, and he that speaketh shall be a barbarian unto me.