² For he that speaketh in an unknown tongue speaketh not unto men, but unto God: for no man understandeth him; howbeit in the spirit he speaketh mysteries.

⁴ He that speaketh in an unknown tongue edifieth himself; but he that prophesieth edifieth the church.

¹³ Wherefore let him that speaketh in an unknown tongue pray that he may interpret.

¹⁴ For if I pray in an unknown tongue, my spirit prayeth, but my understanding is unfruitful.

¹⁵ What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit, and I will sing with the understanding also.

²⁷ If any man speak in an unknown tongue, let it be by two, or at the most by three, and that by course; and let one interpret.

²⁸ But if there be no interpreter, let him keep silence in the church; and let him speak to himself, and to God.

⁴⁰ Let all things be done decently and in order.