1 Corinthians 14:14

The English Standar Version

For if I pray in a tongue, my spirit prays but my mind is unfruitful.

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Therefore, one who speaks in a tongue should pray for the power to interpret.

Nevertheless, in church I would rather speak five words with my mind in order to instruct others, than ten thousand words in a tongue.

For one who speaks in a tongue speaks not to men but to God; for no one understands him, but he utters mysteries in the Spirit.