14For if I make use of tongues in my prayers, my spirit makes the prayer, but not my mind.
15What then? let my prayer be from the spirit, and equally from the mind; let my song be from the spirit, and equally from mind.
16For if you give a blessing with the spirit, how will the man who has no knowledge say, So be it, after your prayer, seeing that he has not taken in what you are saying?
17For your giving of the blessing is certainly well done, but of no profit to the man without knowledge.
18I give praise to God that I am able to make use of tongues more than you all:
19But in the church it would be better for me to make use of five words of which the sense was clear, so that others might have profit, than ten thousand words in a strange tongue.
20My brothers, do not be children in mind: in evil be as little children, but in mind be of full growth.