And when thou prayest, thou shalt not be as the hypocrites are: for they love to pray standing in the synagogues and in the corners of the streets, that they may be seen of men. Verily I say unto you, They have their reward. And when thou prayest - Οταν προσευχη. Προσευχη, prayer, is compounded of προς with, and ευχη a vow, because to pray right, a man binds himself to God, as by a vow, to live to his glory, if he will grant him his grace, etc. Ευχομαι signifies to pour out prayers or vows, from ευ well, and χεω, I pour out; probably alluding to the offerings or libations which were poured out before, or on the altar. A proper idea of prayer is, a pouring out of the soul unto God, as a free-will offering, solemnly and eternally dedicated to him, accompanied with the most earnest desire that it may know, love, and serve him alone. He that comes thus to God will ever be heard and blessed. Prayer is the language of dependence; he who prays not, is endeavoring to live independently of God: this was the first curse, and continues to be the great curse of mankind. In the beginning, Satan said, Eat this fruit; ye shall then be as God; i.e. ye shall be independent: the man hearkened to his voice, sin entered into the world, and notwithstanding the full manifestation of the deception, the ruinous system is still pursued; man will, if possible, live independently of God; hence he either prays not at all, or uses the language without the spirit of prayer. The following verses contain so fine a view, and so just a definition, of prayer, that I think the pious reader will be glad to find them here.
What is Prayer?
Prayer is the soul's sincere desire,
Unuttered or expressed,
The motion of a hidden fire
That trembles in the breast:
Prayer is the burden of a sigh,
The falling of a tear,
The upward gleaming of an eye,
When none but God is near
Prayer is the simplest form of speech
That infant lips can try;
Prayer, the sublimest strains that reach
The Majesty on high:
Prayer is the Christian's vital breath,
The Christian's native air,
His watch-word at the gates of death,
He enters heaven by prayer
Prayer is the contrite sinner's voice,
Returning from his ways,
While angels in their songs rejoice,
And say, Behold he prays!
The saints in prayer appear as one,
In word, in deed, in mind,
When with the Father and the Son
Their fellowship they find
Nor prayer is made on earth alone:
The Holy Spirit pleads;
And Jesus, on th' eternal throne,
For sinners intercedes
"O Thou, by whom we come to God!
The Life, the Truth, the Way,
The path of prayer thyself hast trod,
Lord, teach us how to pray!"
Montgomery
Thou shalt not be as the hypocrites - Υποκριται. From υπο under, and κρινομαι to be judged, thought: properly a stage-player, who acts under a mask, personating a character different from his own; a counterfeit, a dissembler; one who would be thought to be different from what he really is. A person who wishes to be taken for a follower of God, but who has nothing of religion except the outside.
Love to pray standing in the synagogues and in the corners of the streets - The Jewish phylacterical prayers were long, and the canonical hours obliged them to repeat these prayers wherever they happened to be; and the Pharisees, who were full of vain glory, contrived to be overtaken in the streets by the canonical hour, that they might be seen by the people, and applauded for their great and conscientious piety. See Lightfoot. As they had no piety but that which was outward, they endeavored to let it fully appear, that they might make the most of it among the people. It would not have answered their end to kneel before God, for then they might have been unnoticed by men; and consequently have lost that reward which they had in view: viz. the esteem and applause of the multitude. This hypocritical pretension to devotion is common among the Asiatics. Both Hindoos and Mohammedans love to pray in the most public places, at the landing places of rivers, in the public streets, on the roofs of the covered boats, without the least endeavor to conceal their outside devotion, that they may be seen of men.