2 If you praise him in the private language of tongues, God understands you but no one else does, for you are sharing intimacies just between you and him. 3 But when you proclaim his truth in everyday speech, you're letting others in on the truth so that they can grow and be strong and experience his presence with you. 4 The one who prays using a private "prayer language" certainly gets a lot out of it, but proclaiming God's truth to the church in its common language brings the whole church into growth and strength. 5 I want all of you to develop intimacies with God in prayer, but please don't stop with that. Go on and proclaim his clear truth to others. It's more important that everyone have access to the knowledge and love of God in language everyone understands than that you go off and cultivate God's presence in a mysterious prayer language - unless, of course, there is someone who can interpret what you are saying for the benefit of all.
6 Think, friends: If I come to you and all I do is pray privately to God in a way only he can understand, what are you going to get out of that? If I don't address you plainly with some insight or truth or proclamation or teaching, what help am I to you? 7 If musical instruments - flutes, say, or harps - aren't played so that each note is distinct and in tune, how will anyone be able to catch the melody and enjoy the music? 8 If the trumpet call can't be distinguished, will anyone show up for the battle? 9 So if you speak in a way no one can understand, what's the point of opening your mouth? 10 There are many languages in the world and they all mean something to someone. 11 But if I don't understand the language, it's not going to do me much good. 12 It's no different with you. Since you're so eager to participate in what God is doing, why don't you concentrate on doing what helps everyone in the 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.