¹⁴ For if I pray in a tongue, my spirit prays,^(A) but my mind is unfruitful.

² For anyone who speaks in a tongue^[a](A) does not speak to people but to God. Indeed, no one understands them;^(B) they utter mysteries^(C) by the Spirit.

¹⁵ So what shall I do? I will pray with my spirit,^(A) but I will also pray with my understanding; I will sing^(B) with my spirit, but I will also sing with my understanding. ¹⁶ Otherwise when you are praising God in the Spirit, how can someone else, who is now put in the position of an inquirer,^[a] say “Amen”^(C) to your thanksgiving,^(D) since they do not know what you are saying?

¹⁹ But in the church I would rather speak five intelligible words to instruct others than ten thousand words in a tongue.^(A)