Matthew 6:7

Then He speaks even the very words of the prayer. "When ye pray," saith He, "use no vain repetitions, even as the heathen do." You see that when He was discoursing of almsgiving, He removed only that mischief which comes of vainglory, and added nothing more; neither did He say whence one should give alms; as from honest labor, and not from rapine nor covetousness: this being abundantly acknowledged among all. And also before that, He had thoroughly cleared up this point, when He blessed them "that hunger after righteousness." But touching prayer, He adds somewhat over and above; "not to use vain repetitions." And as there He derides the hypocrites, so here the heathen; shaming the hearer everywhere most of all by the vileness of the persons. For since this, in most cases, is especially biting and stinging, I mean our appearing to be likened to outcast persons; by this topic He dissuades them; calling frivolousness, here, by the name of "vain repetition:" as when we ask of God things unsuitable, kingdoms, and glory, and to get the better of enemies, and abundance of wealth, and in general what does not at all concern us. "For He knoweth," saith He, "what things ye have need of." And herewith He seems to me to command in this place, that neither should we make our prayers long; long, I mean, not in time, but in the number and length of the things mentioned. For perseverance indeed in the same requests is our duty: His word being, "continuing instant in prayer." And He Himself too, by that example of the widow, who prevailed with the pitiless and cruel ruler, by the continuance of her intercession; and by that of the friend, who came late at night time, and roused the sleeper from his bed, not for his friendship's, but for his importunity's sake; what did He, but lay down a law, that all should continually make supplication unto Him? He doth not however bid us compose a prayer of ten thousand clauses, and so come to Him and merely repeat it. For this He obscurely signified when He said, "They think that they shall be heard for their much speaking." "For He knoweth," saith He, "what things ye have need of." And if He know, one may say, what we have need of, wherefore must we pray? Not to instruct Him, but to prevail with Him; to be made intimate with Him, by continuance in supplication; to be humbled; to be reminded of thy sins.

On this there starts up a heresy of certain Philosophers who taught the mistaken dogma, that If God knows for what we shall pray, and, before we ask, knows what we need, our prayer is needlessly made to one who has such knowledge. (Epicureans.) To such we shortly reply, That in our prayers we do not instruct, but entreat; it is one thing to inform the ignorant, another to beg of the understanding: the first were to teach; the latter is to perform a service of duty.

(ubi sup.) As the hypocrites use to set themselves so as to be seen in their prayers, whose reward is to be acceptable to men; so the Ethnici (that is, the Gentiles) use to think that they shall be heard for their much speaking; therefore He adds, When ye pray, do not ye use many words. (Epist. 130, 10.) Yet to continue long in prayer is not, as some think, what is here meant, by using many words. For much speaking is one thing, and an enduring fervency another. For of the Lord Himself it is written, that He continued a whole night in prayer, and prayed at great length, setting an example to us. The brethren in Egypt are said to use frequent prayers, but those very short, and as it were hasty ejaculations, lest that fervency of spirit, which is most behoveful for us in prayer, should by longer continuance be violently broken off. Herein themselves sufficiently show, that this fervency of spirit, as it is not to be forced if it cannot last, so if it has lasted is not to be violently broken off. Let prayer then be without much speaking, but not without much entreaty, if this fervent spirit can be supported; for much speaking in prayer is to use in a necessary matter more words than necessary. But to entreat much, is to importune with enduring warmth of heart Him to whom our entreaty is made; for often is this business effected more by groans than words, by weeping more than speech. (ubi sup.) And truly all superfluity of discourse has come from the Gentiles, who labour rather to practise their tongues than to cleanse their hearts, and introduce this art of rhetoric into that wherein they need to persuade God. (ubi sup.) For we use many words then when we have to instruct one who is in ignorance, what need of them to Him who is Creator of all things; Your heavenly Father knoweth what ye have need of before you ask Him. (ubi sup.) Nor ought we to use words in seeking to obtain of God what we would, but to seek with intense and fervent application of mind, with pure love, and suppliant spirit. (Epist. 130, 9.) But even with words we ought at certain periods to make prayer to God, that by these signs of things we may keep ourselves in mind, and may know what progress we have made in such desire, and may stir up ourselves more actively to increase this desire, that after it have begun to wax warm, it may not be chilled and utterly frozen up by divers cares, without our continual care to keep it alive. Words therefore are needful for us that we should be moved by them, that we should understand clearly what it is we ask, not that we should think that by them the Lord is either instructed or persuaded. (Serm. in Mont. ii. 3.) Still it may be asked, what is the use of prayer at all, whether made in words or in meditation of things, if God knows already what is necessary for us. The mental posture of prayer calms and purifies the soul, and makes it of more capacity to receive the divine gifts which are poured into it. For God does not hear us for the prevailing force of our pleadings; He is at all times ready to give us His light, but we are not ready to receive it, but prone to other things. There is then in prayer a turning of the body to God, and a purging of the inward eye, whilst those worldly things which we desired are shut out, that the eye of the mind made single might be able to bear the single light, and in it abide with that joy with which a happy life is perfected.

(Collat. ix. 36.) We should indeed pray often, but in short form, lest if we be long in our prayers, the enemy that lies in wait for us, might suggest something for our thoughts.

(Mor. xxxiii. 23.) True prayer consists rather in the bitter groans of repentance, than in the repetition of set forms of words.