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

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

Yet in the church I had rather speak five words with my understanding, that by my voice I might teach others also, than ten thousand words in an unknown tongue.

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.

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.

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

As unknown, and yet well known; as dying, and, behold, we live; as chastened, and not killed;

For as I passed by, and beheld your devotions, I found an altar with this inscription, TO THE UNKNOWN GOD. Whom therefore ye ignorantly worship, him declare I unto you.

And was unknown by face unto the churches of Judaea which were in Christ: