2 For if you have the ability to speak in tongues, you will be talking only to God, since people won't be able to understand you. You will be speaking by the power of the Spirit, but it will all be mysterious. 3 But one who prophesies strengthens others, encourages them, and comforts them. 4 A person who speaks in tongues is strengthened personally, but one who speaks a word of prophecy strengthens the entire church. 5 I wish you could all speak in tongues, but even more I wish you could all prophesy. For prophecy is greater than speaking in tongues, unless someone interprets what you are saying so that the whole church will be strengthened.
6 Dear brothers and sisters, if I should come to you speaking in an unknown language, how would that help you? But if I bring you a revelation or some special knowledge or prophecy or teaching, that will be helpful. 7 Even lifeless instruments like the flute or the harp must play the notes clearly, or no one will recognize the melody. 8 And if the bugler doesn't sound a clear call, how will the soldiers know they are being called to battle? 9 It's the same for you. If you speak to people in words they don't understand, how will they know what you are saying? You might as well be talking into empty space. 10 There are many different languages in the world, and every language has meaning. 11 But if I don't understand a language, I will be a foreigner to someone who speaks it, and the one who speaks it will be a foreigner to me. 12 And the same is true for you. Since you are so eager to have the special abilities the Spirit gives, seek those that will strengthen the whole church.
Matthew Henry's Commentary on 1 Corinthians 14:2-12
Commentary on 1 Corinthians 14:1-5
(Read 1 Corinthians 14:1-5)
Prophesying, that is, explaining Scripture, is compared with speaking with tongues. This drew attention, more than the plain interpretation of Scripture; it gratified pride more, but promoted the purposes of Christian charity less; it would not equally do good to the souls of men. What cannot be understood, never can edify. No advantage can be reaped from the most excellent discourses, if delivered in language such as the hearers cannot speak or understand. Every ability or possession is valuable in proportion to its usefulness. Even fervent, spiritual affection must be governed by the exercise of the understanding, else men will disgrace the truths they profess to promote.
Commentary on 1 Corinthians 14:6-14
(Read 1 Corinthians 14:6-14)
Even an apostle could not edify, unless he spoke so as to be understood by his hearers. To speak words that have no meaning to those who hear them, is but speaking into the air. That cannot answer the end of speaking, which has no meaning; in this case, speaker and hearers are barbarians to each other. All religious services should be so performed in Christian assemblies, that all may join in, and profit by them. Language plain and easy to be understood, is the most proper for public worship, and other religious exercises. Every true follower of Christ will rather desire to do good to others, than to get a name for learning or fine speaking.