Yet in the church I had rather speak {q} five words with my understanding, that by my voice I might teach others also, than ten thousand words in an unknown tongue.

(q) A very few words.

People's New Testament

14:19 I had rather speak five words with my understanding, etc. All must be done to edification (see 1Co 14:26). Hence, all must be understood. There is a lesson here to preachers who are so learned in their utterances that the people cannot understand them.

Wesley's Notes

14:19 With my understanding - In a rational manner; so as not only to understand myself, but to be understood by others.

Jamieson-Fausset-Brown Bible Commentary

19. I had rather-The Greek verb more literally expresses this meaning, "I WISH to speak five words with my understanding (rather) than ten thousand words in an unknown tongue"; even the two thousandth part of ten thousand. The Greek for "I would rather," would be a different verb. Paul would NOT wish at all to speak "ten thousand words in an unknown tongue."

Matthew Henry's Concise Commentary

14:15-25 There can be no assent to prayers that are not understood. A truly Christian minister will seek much more to do spiritual good to men's souls, than to get the greatest applause to himself. This is proving himself the servant of Christ. Children are apt to be struck with novelty; but do not act like them. Christians should be like children, void of guile and malice; yet they should not be unskilful as to the word of righteousness, but only as to the arts of mischief. It is a proof that a people are forsaken of God, when he gives them up to the rule of those who teach them to worship in another language. They can never be benefitted by such teaching. Yet thus the preachers did who delivered their instructions in an unknown tongue. Would it not make Christianity ridiculous to a heathen, to hear the ministers pray or preach in a language which neither he nor the assembly understood? But if those who minister, plainly interpret Scripture, or preach the great truths and rules of the gospel, a heathen or unlearned person might become a convert to Christianity. His conscience might be touched, the secrets of his heart might be revealed to him, and so he might be brought to confess his guilt, and to own that God was present in the assembly. Scripture truth, plainly and duly taught, has a wonderful power to awaken the conscience and touch the heart.

Matthew Henry's Whole Bible Commentary

Verses 15-20

The apostle here sums up the argument hitherto, and,

I. Directs them how they should sing and pray in public (v. 15): What is it then? I will pray with the spirit, and I will pray with the understanding also. I will sing with the spirit, etc. He does not forbid their praying or singing under a divine afflatus, or when they were inspired for this purpose, or had such a spiritual gift communicated to them; but he would have them perform both so as to be understood by others, that others might join with them. Note, Public worship should be performed so as to be understood.

II. He enforces the argument with several reasons.

1. That otherwise the unlearned could not say Amen to their prayers or thanksgivings, could not join in the worship, for they did not understand it, v. 16. He who fills up or occupies the place of the unlearned, that is, as the ancients interpret it, the body of the people, who, in most Christian assemblies, are illiterate; how should they say Amen to prayers in an unknown tongue? How should they declare their consent and concurrence? This is saying Amen, So be it. God grant the thing we have requested; or, We join in the confession that has been made of sin, and in the acknowledgment that has been made of divine mercies and favours. This is the import of saying Amen. All should say Amen inwardly; and it is not improper to testify this inward concurrence in public prayers and devotions, by an audible Amen. The ancient Christians said Amen aloud. Vide Just. Mart. apol. 2. propè fin. Now, how should the people say Amen to what they did not understand? Note, There can be no concurrence in those prayers that are not understood. The intention of public devotions is therefore entirely destroyed if they are performed in an unknown tongue. He who performs may pray well, and give thanks well, but not in that time and place, because others are not, cannot be, edified (v. 17) by what they understand not.

2. He alleges his own example, to make the greater impression, concerning which observe, (1.) That he did not come behind any of them in this spiritual gift: "I thank my God, I speak with tongues more than you all (v. 18); not only more than any single person among you, but more than all together." It was not envy at their better furniture that made Paul depreciate what they so highly valued and so much vaunted of; he surpassed them all in this very gift of tongues, and did not vilify their gift because he had it not. This spirit of envy is too common in the world. But the apostle took care to guard against this misconstruction of his purpose, by letting them know there was more ground for them to envy him upon this head than for him to envy them. Note, When we beat down men's unreasonable value for themselves, or any of their possessions or attainments, we should let them see, if possible, that this does not proceed from an envious and grudging spirit. We miss our aim if they can fairly give our conduct this invidious turn. Paul could not be justly censured, nor suspected for any such principle in this whole argument. He spoke more language than they all. Yet, (2.) He had rather speak five words with understanding, that is, so as to be understood, and instruct and edify others, than ten thousand words in an unknown tongue, v. 19. He was so far from valuing himself upon talking languages, or making ostentation of his talents of this kind, that he had rather speak five intelligible words, to benefit others, than make a thousand, ten thousand fine discourses, that would do no one else any good, because they did not understand them. Note, A truly Christian minister will value himself much more upon doing the least spiritual good to men's souls than upon procuring the greatest applause and commendation to himself. This is true grandeur and nobleness of spirit; it is acting up to his character; it is approving himself the servant of Christ, and not a vassal to his own pride and vanity.

3. He adds a plain intimation that the fondness then discovered for this gift was but too plain an indication of the immaturity of their judgment: Brethren, be not children in understanding; in malice be you children, but in understanding be men, v. 20. Children are apt to be struck with novelty and strange appearances. They are taken with an outward show, without enquiring into the true nature and worth of things. Do not you act like them, and prefer noise and show to worth and substance; show a greater ripeness of judgment, and act a more manly part; be like children in nothing but an innocent and inoffensive disposition. A double rebuke is couched in this passage, both of their pride upon account of their gifts, and their arrogance and haughtiness towards each other, and the contests and quarrels proceeding from them. Note, Christians should be harmless and inoffensive as children, void of all guile and malice; but should have wisdom and knowledge that are ripe and mature. They should not be unskilful in the word of righteousness (Heb. 5:13), though they should be unskilful in all the arts of mischief.