3 “And there has been made in peace a place for Him, and His habitation is in Sion”. Again, Sion is as it were the country of the Jews; the true Sion is the Church of Christians. But the interpretation of the Hebrew names is thus handed down to us: Judæa is interpreted confession, Israel, one seeing God. After Judæa is Israel. Will you see God? First do thou confess, and then in yourself there is made a place for God; because “there has been made in peace a place for Him.” So long as then you confess not your sins, in a manner you are quarrelling with God. For how are you not disputing with Him, who art praising that which displeases Him? He punishes a thief, you praise theft: He punishes a drunken man, you praise drunkenness. You are disputing with God, you have not made for Him a place in your heart: because in peace is His place. And how do you begin to have peace with God? You begin with Him in confession. There is a voice of a Psalm, saying, “Begin ye to the Lord in confession.” What is, “Begin ye to the Lord in confession”? Begin ye to be joined to the Lord. In what manner? So that the same thing may displease you as displeases Him. There displeases Him your evil life; if it please yourself, you are disunited from Him; if it displease you, through confession to Him you are united....
4. “There He has broken the strength of bows, and the shield, and the sword, and the battle”. Where has He broken? In that eternal peace, in that perfect peace. And now, my brethren, they that have rightly believed see that they ought not to rely on themselves: and all the might of their own menaces, and whatsoever is in them whetted for mischief, this they break in pieces; and whatsoever they deem of great virtue wherewith to protect themselves temporally, and the war which they were waging against God by defending their sins, all these things He has broken there.
5. “You enlightening marvellously from the eternal mountains”. What are the eternal mountains? Those which He has Himself made eternal; which are the great mountains, the preachers of truth. You enlighten, but from the eternal mountains: the great mountains are first to receive Your light, and from Your light which the mountains receive, the earth also is clothed. But those great mountains the Apostles have received, the Apostles have received as it were the first streaks of the rising light....Wherefore also, in another place, a Psalm says what? “I have lifted up my eyes unto the mountains, whence there shall come help to me.” What then, in the mountains is your hope, and from thence to you shall there come help? Have you stayed at the mountains? Take heed what you do. There is something above the mountains: above the mountains is He at whom the mountains tremble. “I have lifted up,” he says, “my eyes unto the mountains, whence there shall come help to me.” But what follows? “My help,” he says, “is from the Lord, who has made Heaven and earth.” Unto the mountains indeed I have lifted up eyes, because through the mountains to me the Scriptures were displayed: but I have my heart in Him that does enlighten all mountains....
6. “There have been troubled all the unwise in heart”....How have they been troubled? When the Gospel is preached. And what is life eternal? And who is He that has risen from the dead? The Athenians wondered, when the Apostle Paul spoke of the resurrection of the dead, and thought that he spoke but fables. But because he said that there was another life which neither eye has seen, nor ear heard, nor has it gone up into the heart of man, therefore the unwise in heart were troubled. But what has befallen them? “They have slept their sleep, and all men of riches have found nothing in their hands.” They have loved things present, and have gone to sleep in the midst of things present: and so these very present things have become to them delightful: just as he that sees in a dream himself to have found treasure, is so long rich as he wakes not. The dream has made him rich, waking has made him poor. Sleep perchance has held him slumbering on the earth, and lying on the hard ground, poor and perchance a beggar; in sleep he has seen himself to lie on an ivory or golden bed, and on feathers heaped up; so long as he is sleeping, he is sleeping well, waking he has found himself on the hard ground, whereon sleep had taken him. Such men also are these too: they have come into this life, and through temporal desires, they have as it were slumbered here; and them riches, and vain pomps that fly away, have taken, and they have passed away: they have not understood how much of good might be done therewith. For if they had known of another life, there they would have laid up unto themselves the treasure which here was doomed to perish: like as Zacchæus, the chief of the Publicans, saw that good when he received the Lord Jesus in his house, and he says, “The half of my goods I give to the poor, and if to any man I have done any wrong, fourfold I restore.” This man was not in the emptiness of men dreaming, but in the faith of men awake....
7. “By Your chiding, O God of Jacob, there have slept all men that have mounted horses”. Who are they that have mounted horses? They that would not be humble. To sit on horseback is no sin; but it is a sin to lift up the neck of power against God, and to deem one's self to be in some distinction. Because you are rich, you have mounted; God does chide, and you sleep. Great is the anger of Him chiding, great the anger. Let your Love observe the terrible thing. Chiding has noise, the noise is wont to make men wake. So great is the force of God chiding, that he said, “By Your chiding, O God of Jacob, there have slept all men that have mounted horses.” Behold what a sleep that Pharaoh slept who mounted horses. For he was not awake in heart, because against chiding he had his heart hardened. For hardness of heart is slumber. I ask you, my brethren, how they sleep, who, while the Gospel is sounding, and the Amen, and the Hallelujah, throughout the whole world, yet will not condemn their old life, and wake up unto a new life. There was the Scripture of God in Judæa only, now throughout the whole world it is sung. In that one nation one God who made all things was spoken of, as to be adored and worshipped; now where is He unsaid? Christ has risen again, though derided on the Cross; that very Cross whereon He was derided, He has now imprinted on the brows of kings: and men yet sleep....
8. “You are terrible, and who shall withstand You at that time by Your anger?”. Now they sleep, and perceive not You angry; but for cause that they should sleep, He was angry. Now that which sleeping they perceived not, at the end they shall perceive. For there shall appear the Judge of quick and dead. “And who shall withstand You at that time by Your anger?” For now they speak that which they will, and they dispute against God and say, who are the Christians? Or who is Christ? Or what fools are they that believe that which they see not, and relinquish the pleasures which they see, and follow the faith of things which are not displayed to their eyes! You sleep and snore, ye speak against God, as much as you are able. “How long shall sinners, O Lord, how long shall sinners glory, they answer and will speak iniquity?” But when does no one answer and no one speak, except when he turns himself against himself?...
Source: The Enarrations, or Expositions, on the Psalms (New Advent)