Matthew 5:8

The merciful loses the benefit of his mercy, unless he shews it from a pure heart; for if he seeks to have whereof to boast, he loses the fruit of his deeds; the next that follows therefore is, "Blessed are the pure of heart."

ap. Anselm: Purity of heart comes properly in the sixth place, because on the sixth day man was created in the image of God, which image was shrouded by sin, but is formed anew in pure hearts by grace. It follows rightly the beforementioned graces, because if they be not there, a clean heart is not created in a man.

By the pure are here meant those who possess a perfect goodness, conscious to themselves of no evil thoughts, or again those who live in such temperance as is mostly necessary to seeing God according to that of St. Paul, "Follow peace with all men, and holiness, without which no man shall see God." For as there are many merciful, yet unchaste, to shew that mercy alone is not enough, he adds this concerning purity.

The pure is known by purity of heart, for the temple of God cannot be impure.

He who in thought and deed fulfils all righteousness, "sees God" in his heart, for righteousness is an image of God, for God is righteousness. So far as any one has rescued himself from evil, and works things that are good, so far does he "see God," either hardly, or fully, or sometimes, or always, according to the capabilities of human nature. But in that world to come the pure in heart shall see God face to face, not in a glass, and in enigma as here.

They are foolish who seek to see God with the bodily eye, seeing He is seen only by the heart, as it is elsewhere written, "In singleness of heart seek ye Him;" the single heart is the same as is here called the pure heart.

But if spiritual eyes in the spiritual body shall be able only to see so much as they we now have can see, undoubtedly God will not be able to be seen of them.

This seeing God is the reward of faith; to which end our hearts are made pure by faith, as it is written, "cleansing their hearts by faith;" [Acts 15:9] but the present verse proves this still more strongly.

No one seeing God can be alive with the life men have on earth, or with these our bodily senses. Unless one die altogether out of this life, either by totally departing from the body, or so alienated from carnal lusts that he may truly say with the Apostle, "whether in the body or out of the body, I cannot tell," he is not translated that he should see this vision.

non occ.: The reward of these is greater than the reward of the first; being not merely to dine in the King's court, but further to see His face.

2. He declares: “For in this place is One greater than the temple.” But [the words] greater and less are not applied to those things which have nothing in common between themselves, and are of an opposite nature, and mutually repugnant; but are used in the case of those of the same substance, and which possess properties in common, but merely differ in number and size; such as water from water, and light from light, and grace from grace. Greater, therefore, is that legislation which has been given in order to liberty than that given in order to bondage; and therefore it has also been diffused, not throughout one nation [only], but over the whole world. …

5. These things did the prophets set forth in a prophetical manner; but they did not, as some allege, [proclaim] that He who was seen by the prophets was a different [God], the Father of all being invisible. Yet this is what those [heretics] declare, who are altogether ignorant of the nature of prophecy. For prophecy is a prediction of things future, that is, a setting forth beforehand of those things which shall be afterwards. The prophets, then, indicated beforehand that God should be seen by men; as the Lord also says, “Blessed are the pure in heart, for they shall see God.” But in respect to His greatness, and His wonderful glory, “no man shall see God and live,” for the Father is incomprehensible; but in regard to His love, and kindness, and as to His infinite power, even this He grants to those who love Him, that is, to see God, which thing the prophets did also predict. …

But the knowledge of those who think themselves wise, whether the barbarian sects or the philosophers among the Greeks, according to the apostle, “puffeth up.” But that knowledge, which is the scientific demonstration of what is delivered according to the true philosophy, is founded on faith. Now, we may say that it is that process of reason which, from what is admitted, procures faith in what is disputed. Now, faith being twofold, the faith of knowledge and that of opinion, nothing prevents us from calling demonstration twofold, the one resting on knowledge, the other on opinion; since also knowledge and foreknowledge are designated as twofold, that which is essentially accurate, that which is defective. …

For that investigation, which accords with faith, which builds, on the foundation of faith, the august knowledge of the truth, we know to be the best. Now we know that neither things which are clear are made subjects of investigation, such as if it is day, while it is day; nor things unknown, and never destined to become clear, as whether the stars are even or odd in number; nor things convertible; and those are so which can be said equally by those who take the opposite side, as if what is in the womb is a living creature or not. A fourth mode is, when, from either side of those, there is advanced an unanswerable and irrefragable argument. If, then, the ground of inquiry, according to all of these modes, is removed, faith is established. …

Such, according to David, “rest in the holy hill of God,” in the Church far on high, in which are gathered the philosophers of God, “who are Israelites indeed, who are pure in heart, in whom there is no guile;” who do not remain in the seventh seat, the place of rest, but are promoted, through the active beneficence of the divine likeness, to the heritage of beneficence which is the eighth grade; devoting themselves to the pure vision of insatiable contemplation.

Now I pass over other things in silence, glorifying the Lord. But I affirm that gnostic souls, that surpass in the grandeur of contemplation the mode of life of each of the holy ranks, among whom the blessed abodes of the gods are allotted by distribution, reckoned holy among the holy, transferred entire from among the entire, reaching places better than the better places, embracing the divine vision not in mirrors or by means of mirrors, but in the transcendently clear and absolutely pure insatiable vision which is the privilege of intensely loving souls, holding festival through endless ages, remain honoured with the indentity of all excellence. …

9. Here, if any one lay before us the passage where it is said, “Blessed are the pure in heart, for they shall see God,” from that very passage, in my opinion, will our position derive additional strength; for what else is seeing God in heart, but, according to our exposition as above, understanding and knowing Him with the mind? For the names of the organs of sense are frequently applied to the soul, so that it may be said to see with the eyes of the heart, i.e., to perform an intellectual act by means of the power of intelligence. So also it is said to hear with the ears when it perceives the deeper meaning of a statement. So also we say that it makes use of teeth, when it chews and eats the bread of life which cometh down from heaven. …

As Celsus supposes that we uphold the doctrine of the resurrection in order that we may see and know God, he thus follows out his notions on the subject: “After they have been utterly refuted and vanquished, they still, as if regardless of all objections, come back again to the same question, ‘How then shall we see and know God? how shall we go to Him?’” Let any, however, who are disposed to hear us observe, that if we have need of a body for other purposes, as for occupying a material locality to which this body must be adapted, and if on that account the “tabernacle” is clothed in the way we have shown, we have no need of a body in order to know God. For that which sees God is not the eye of the body; it is the mind which is made in the image of the Creator, and which God has in His providence rendered capable of that knowledge. …

Observe that when Plato says, that “after having found out the Creator and Father of the universe, it is impossible to make Him known to all men,” he does not speak of Him as unspeakable, and as incapable of being expressed in words. On the contrary, he implies that He may be spoken of, and that there are a few to whom He may be made known. But Celsus, as if forgetting the language which he had just quoted from Plato, immediately gives God the name of “the unspeakable.” He says: “since the wise men have found out this way, in order to be able to give us some idea of the First of Beings, who is unspeakable.” For ourselves, we hold that not God alone is unspeakable, but other things also which are inferior to Him. …

2. The whole of this transaction therefore being brought before me, I decided that the presbytery should be brought together; (for there were present five bishops, who were also present to-day;) so that by well-grounded counsel it might be determined with the consent of all what ought to be observed in respect of their persons. And that you may know the feeling of all, and the advice of each one, I decided also to bring to your knowledge our various opinions, which you will read subjoined. …

In the Epistle of John: “If our heart blame us not, we have confidence towards God; and whatever we ask, we shall receive from Him.” Also in the Gospel according to Matthew: “Blessed are they of a pure heart, for they shall see God.” Also in the twenty-third Psalm: “Who shall ascend into the hill of the Lord? or who shall stand in His holy place? The innocent in hands and of a pure heart.”

Hereto also I will add that view wherein the heretic, while he rejoices as if at the loss of some power of seeing special truth and light, acknowledges the total blindness of his error. For again and again, and frequently, he objects that it was said, “Have I been so long time with you, and do ye not know me, Philip? He who hath seen me, hath seen the Father also.” But let him learn what he does not understand. Philip is reproved, and rightly, and deservedly indeed, because he has said, “Lord, show us the Father, and it sufficeth us.” For when had he either heard from Christ, or learnt that Christ was the Father? although, on the other hand, he had frequently heard, and had often learned, rather that He was the Son, not that He was the Father. …