13. When we speak languages that others don't know, we should pray for the power to explain what we mean.
14. For example, if I use an unknown language in my prayers, my spirit prays but my mind is useless.
15. Then what should I do? There are times when I should pray with my spirit, and times when I should pray with my mind. Sometimes I should sing with my spirit, and at other times I should sing with my mind.
16. Suppose some strangers are in your worship service, when you are praising God with your spirit. If they don't understand you, how will they know to say, “Amen”?
17. You may be worshipping God in a wonderful way, but no one else will be helped.