Happy are they who are of a pure heart We might be apt to think, that what is here stated by Christ is in accordance with the judgment of all. Purity of heart is universally acknowledged to be the mother of all virtues. And yet there is hardly one person in a hundred, who does not put craftiness in the place of the greatest virtue. Hence those persons are commonly accounted happy, whose ingenuity is exercised in the successful practice of deceit, who gain dexterous advantages, by indirect means, over those with whom they have intercourse. Christ does not at all agree with carnal reason, when he pronounces those to be happy, who take no delight in cunning, but converse sincerely with men, and express nothing, by word or look, which they do not feel in their heart. Simple people are ridiculed for want of caution, and for not looking sharply enough to themselves. But Christ directs them to higher views, and bids them consider that, if they have not sagacity to deceive in this world, they will enjoy the sight of God in heaven.

Blessed are the pure in heart - That is, whose minds, motives, and principles are pure; who seek not only to have the external actions correct, but who desire to be holy in heart, and who are so. Man looks on the outward appearance, but God looks on the heart.
They shall see God - There is a sense in which all will see God, Revelation 1:7. That is, they will behold him as a Judge, not as a Friend. In this place it is spoken of as a special favor. So also in Revelation 22:4, "And they shall see his face." To see the face of one, or to be in the presence of any one, were terms among the Jews expressive of great favor. It was regarded as a high honor to be in the presence of kings and princes, and to be permitted to see them, Proverbs 22:29, "He shall stand before kings." See also 2-Kings 25:19, "Those that stood in the king's presence;" in the Hebrew, those that saw the face of the king; that is, who were his favorites and friends. So here, to see God, means to be his friends and favorites, and to dwell with him in his kingdom.

Pure in heart - In opposition to the Pharisees, who affected outward purity, while their hearts were full of corruption and defilement. A principal part of the Jewish religion consisted in outward washings and cleansings: on this ground they expected to see God, to enjoy eternal glory: but Christ here shows that a purification of the heart, from all vile affections and desires, is essentially requisite in order to enter into the kingdom of God. He whose soul is not delivered from all sin, through the blood of the covenant, can have no Scriptural hope of ever being with God. There is a remarkable illustration of this passage, quoted by Mr. Wakefield from Origen, Contra Cels. lib. vi. "God has no body, and therefore is invisible: but men of contemplation can discern him with the heart and understanding. But A Defiled Heart Cannot See God: but He Must Be Pure Who Wishes to Enjoy a Proper View of a Pure Being."
Shall see God - This is a Hebraism, which signifies, possess God, enjoy his felicity: as seeing a thing, was used among the Hebrews for possessing it. See Psalm 16:10. Thou wilt not suffer thy Holy One to see corruption, i.e. he shall not be corrupted. So John 3:3 : Except a man be born again, he cannot See the kingdom of God, i.e. he cannot enjoy it. So John 3:16. He that believeth not the Son, shall not See life, i. e shall not be put in possession of eternal glory. The Hindoo idolaters vainly boast of what the genuine followers of Christ actually enjoy - having the Divine favor witnessed to their souls by the Holy Spirit. The Hindoos pretend that some of their sages have been favored with a sight of their guardian deity. - See Ward's Customs.
Probably our Lord alludes to the advantages those had, who were legally pure, of entering into the sanctuary, into the presence of God, while those who had contracted any legal defilement were excluded from it. This also was obviously typical.

Blessed [are] the (c) pure in heart: for they shall see God.
(c) Fitly is this word "pure" joined with the heart, for as a bright and shining resemblance or image may be seen plainly in a clear and pure looking glass, even so does the face (as it were) of the everlasting God, shine forth, and clearly appear in a pure heart.

Blessed are the pure in heart,.... Not in the head; for men may have pure notions and impure hearts; not in the hand, or action, or in outward conversation only; so the Pharisees were outwardly righteous before men, but inwardly full of impurity; but "in heart". The heart of man is naturally unclean; nor is it in the power of man to make it clean, or to be pure from his sin; nor is any man in this life, in such sense, so pure in heart, as to be entirely free from sin. This is only true of Christ, angels, and glorified saints: but such may be said to be so, who, though they have sin dwelling in them, are justified from all sin, by the righteousness of Christ, and are "clean through the word", or sentence of justification pronounced upon them, on the account of that righteousness; whose iniquities are all of them forgiven, and whose hearts are sprinkled with the blood of Jesus, which cleanses from all sin; and who have the grace of God wrought in their hearts, which, though as yet imperfect, it is entirely pure; there is not the least spot or stain of sin in it: and such souls as they are in love with, so they most earnestly desire after more purity of heart, lip, life, and conversation. And happy they are,
for they shall see God; in this life, enjoying communion with him, both in private and public, in the several duties of religion, in the house and ordinances of God; where they often behold his beauty, see his power and his glory, and taste, and know, that he is good and gracious: and in the other world, where they shall see God in Christ, with the eyes of their understanding; and God incarnate, with the eyes of their bodies, after the resurrection; which sight of Christ, and God in Christ, will be unspeakably glorious, desirable, delightful, and satisfying; it will be free from all darkness and error, and from all interruption; it will be an appropriating and transforming one, and will last for ever.

Blessed are the pure in heart: for they shall see God--Here, too, we are on Old Testament ground. There the difference between outward and inward purity, and the acceptableness of the latter only in the sight of God, are everywhere taught. Nor is the "vision of God" strange to the Old Testament; and though it was an understood thing that this was not possible in the present life (Exodus 33:20; and compare Job 19:26-27; Isaiah 6:5), yet spiritually it was known and felt to be the privilege of the saints even here (Genesis 5:24; Genesis 6:9; Genesis 17:1; Genesis 48:15; Psalm 27:4; Psalm 36:9; Psalm 63:2; Isaiah 38:3, Isaiah 38:11, &c.). But oh, with what grand simplicity, brevity, and power is this great fundamental truth here expressed! And in what striking contrast would such teaching appear to that which was then current, in which exclusive attention was paid to ceremonial purification and external morality! This heart purity begins in a "heart sprinkled from an evil conscience," or a "conscience purged from dead works" (Hebrews 10:22; Hebrews 9:14; and see Acts 15:9); and this also is taught in the Old Testament (Psalm 32:1-2; compare Romans 4:5-8; Isaiah 6:5-8). The conscience thus purged--the heart thus sprinkled--there is light within wherewith to see God. "If we say that we have fellowship with Him, and walk in darkness, we lie, and do not the truth: but if we walk in the light, as He is in the light, we have fellowship one with the other"--He with us and we with Him--"and the blood of Jesus Christ His Son cleanseth us"--us who have this fellowship, and who, without such continual cleansing, would soon lose it again--"from all sin" (1-John 1:6-7). "Whosoever sinneth hath not seen Him, neither known Him" (1-John 3:6); "He that doeth evil hath not seen God" (3-John 1:11). The inward vision thus clarified, and the whole inner man in sympathy with God, each looks upon the other with complacency and joy, and we are "changed into the same image from glory to glory." But the full and beatific vision of God is reserved for that time to which the Psalmist stretches his views--"As for me, I shall behold Thy face in righteousness: I shall be satisfied, when I awake, with Thy likeness" (Psalm 17:15). Then shall His servants serve Him: and they shall see His face; and His name shall be in their foreheads (Revelation 22:3-4). They shall see Him as He is (1-John 3:2). But, says the apostle, expressing the converse of this beatitude--"Follow holiness, without which no man shall see the Lord" (Hebrews 12:14).

Blessed are the pure in heart. The Jew, under the tuition of the Pharisees, cared little for the state of the heart, so that outward forms were duly kept. Jesus, however, demands that the heart, the affections, the mind, shall be purified, as the fountain from whence flows the moral and religious life. A pure heart begets a pure life; an impure heart, a corrupt life.
They shall see God. Not with the natural eye, but the spiritual vision; by faith. In the pure heart the Lord will dwell and his presence will be recognized. See John 14:23.

The pure in heart - The sanctified: they who love God with all their hearts. They shall see God - In all things here; hereafter in glory.