1Cor 14:19

“"Howbeit in the Church I had rather speak five words with my understanding, that I might instruct others also." What is that, "speak with my understanding, that I might instruct others also?" "Understanding what I say," and "words which I can both interpret to others, and speak intelligently, and teach the hearers. Than ten thousand words in a tongue." Wherefore? "That I may instruct others," saith he. For the one hath but display only; the other, great utility: this being what he everywhere seeks, I mean the common profit. And yet the gift of tongues was strange, but that of prophecy familiar and ancient and heretofore given to many; this on the contrary then first given: howbeit it was not much cared for by him. Wherefore neither did he employ it; not because he had it not, but because he always sought the more profitable things: being as he was free from all vain-glory, and considering one thing only, how he might render the hearers better.”

“Brethren, be not children in understanding,.... There are some things in children in which it is reproachful for believers to be like them; as nonproficiency in knowledge, want of capacity to receive, bear, and digest strong meat; levity, fickleness, and inconstancy, unskilfulness in the word, deficiency of knowledge, want of understanding, not of things natural, but spiritual and evangelical; which is the more aggravated, since their understandings were opened and enlightened; an understanding was given them; the Spirit of God, as a spirit of understanding, was bestowed on them; they had the Scriptures, which are able to make wise unto salvation, and the man of God perfect; and also the ministers of the Gospel to explain divine truths to them; and many had been a long time in the school of Christ, and might have been teachers of others; and yet; after all, were children in understanding, and needed to be taught the first principles of the oracles of God. The apostle here has chiefly reference to the gift of speaking with tongues, these Corinthians were so desirous of; which when they had it, was only to talk like children; and for them to prefer it to other gifts, which were more useful and beneficial, discovered their judgment to be but the judgment of children; and if they desired this, and made use of it for ostentation, it showed a childish vanity, from which the apostle here dissuades: howbeit in malice be ye children: in other things it is commendable to imitate children, and be like them; as in innocence and harmlessness of conversation; to be meek, modest, and humble, free from pride and vain glory; to be without guile and hypocrisy, without rancour and bitterness, envying and malice, but tender hearted, and ready to forgive. This the apostle recommends: but in understanding be men; or "perfect", of ripe and full age, who have their senses exercised to discern between good and evil, "a man", says Aben Ezra (p), in our language, signifies , "one full of knowledge", as in Exo 10:11. It is not perfection of justification that is here meant, for babes in Christ are as perfect in this sense as grown men; nor a perfection of sanctification, for there is no such thing as this in any in this life; there is a perfection of sanctification in Christ, and of parts in everyone that is a new creature; and as that denotes sincerity and uprightness, it is in all that have known the grace of God in truth; but then these are each of them as true of new born babes, young converts, as of older Christians, and strong men: but of knowledge and understanding in divine things; which though it is imperfect in the best, yet in some it is in greater perfection than in others; who may, in a comparative sense, be said to be perfect, or men of full age, who are arrived to a considerable ripeness and maturity of spiritual knowledge; and this is what believers should be pressing after, and desirous of, and make use of all proper methods, such as reading, hearing, and praying, to attain unto. (p) Comment. in Psal. xxxvii. 23.”

“Yet in the church - As the grand object of public worship is the edification of those who attend, five words spoken so as to convey edification, were of much more consequence than ten thousand which, not being understood, could convey none. By the word γλωσση, tongue, to which we add unknown, I suppose the apostle always means the Hebrew, for the reasons offered in the note on Co1 14:1. One of the greatest difficulties, says Bishop Pearce, in this epistle is contained in the words πνευμα and νους, spirit and understanding, which are frequently used in this chapter; and fixing the true meaning of these words will solve the difficulty. In this verse the apostle explains λαλειν τῳ νοΐ, to speak with the understanding, by ἱνα αλλους κατηχησω, that I might teach others; so that the sense of νους, understanding, seems to be, that understanding which the hearer has of what is said; and this sense will agree well with, I will sing with the spirit, and with the understanding, Co1 14:15. He observes also that πνευμα spirit, and νους, understanding, have a sense opposite to each other; so that if νους is rightly rendered, the understanding which another has of what is said; then πνευμα will signify a man's own mind, i.e. his own understanding of what he himself speaks; and this sense agrees well with Co1 14:2 : In the spirit he speaketh mysteries.”

“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."”