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He that speaketh in an unknown tongue speaketh not unto men, but unto God: for no man understandeth him. ...He that speaketh in an unknown tongue edifieth himself. ... I would that ye all spake with tongues. 1 Corinthians 14:2-5Don't forbid speaking in tongues.
Forbid not to speak with tongues. 1 Corinthians 14:39Paul was proud of speaking in tongues, saying "I speak in tongues more than anyone else."
I thank my God, I speak with tongues more than ye all. 1 Corinthians 14:18
For if the trumpet give an uncertain sound, who shall prepare himself to the battle? ... 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. 1 Corinthians 14:8-9