Exposition on the Psalms of David
"And he flew." Here he treats of the changes of the air according to corporeal effects; and there is a threefold change: namely in winds, in clouds, and in thunder; and he treats of each. Regarding the first he proposes three things. First, the efficient cause of all these changes. Second, the matter. Third, the manner. Now the cause of all these is the celestial body, which by its motion causes these alterations of the air; and therefore he says, "he inclined the heavens," that is, he directed the power of the celestial bodies toward these effects, because they have this from God. "And he descended." Although God, remaining immovable, works all things, he is nevertheless said to move through his effect, inasmuch as he produces mobile effects. Wis. 7: "Wisdom is more mobile than all mobile things." And according to this he is said to descend, inasmuch as he causes the power of the heavens to descend. The matter of the winds is haze, or dry smoke, not so thin that it ascends all the way to fire, but subsisting; and he says, "under his feet," that is, under his power; and all of it is from God. The manner: "He ascended upon the Cherubim." It should be noted that the Jews imagine that just as a king has a chariot, so God also has a chariot, which is the Cherubim; and they imagine God as corporeal and similar to the Cherubim. And therefore in Jerome's Psalter it is said even word for word, "He rode upon the Cherubim." And these have a false imagination, because the things said figuratively in Scripture are signs of spiritual truth. Now divine wisdom is said to move inasmuch as it causes motion in mobile things. But whatever God causes in these lower things, he causes through the ministry of spiritual creatures; hence Augustine says that God moves corporeal creatures through spiritual ones. But the spiritual creature does not do this by its own power, but with God presiding. And the Cherubim are said to do this especially because the name is interpreted as "fullness of knowledge," and God does all things through his knowledge. And he is said to be "above the Cherubim" because God's knowledge exceeds that of the angels. And therefore God does this, "flying," that is, causing to fly. And through the Cherubim, that is, through his knowledge, and above them whom he exceeds. And he said "he flew" because the motion of the wind is not uniform; and he says "the wings of the winds" on account of the swiftness of their motion. Mystically, the mystery of the incarnation is set forth here. And first the incarnation of Christ is set forth, through which he went out and came into the world. Second, his ascension, by which he went to the Father, at "he ascended upon the Cherubim." Third, those things that were done in the Church after Christ's ascension, "and he made darkness." He says therefore, "He inclined the heavens and descended," etc. If some great person shows humility to some lowly person from a village, he is said to do an injury and abasement to the whole place over which he presides. So the Son of Man is said to humble himself and incline the heavens, because he willed to come to us in humility. "He descended," that is, he appeared visibly: Bar. 3: "Afterward he was seen upon earth and conversed with men." 1 Jn. 1: "What we have seen and heard and our hands have handled of the word of life." He descended therefore by humility, taking on human flesh, dying, and teaching humble things. Or "he inclined the heavens," that is, the preachers, "and descended," making them say things comprehensible to men. "And haze," that is, the devil and all the wicked, "under his feet," that is, Christ's: Ps. 109: "I will make your enemies your footstool." Of the ascension he says, "He ascended upon the Cherubim." Eph. 4: "He who descended is the same who ascended above all the heavens, that he might fill all things." "Above the Cherubim," that is, above the orders of angels: Eph. 1: "Setting him at his right hand in the heavenly places, above all principality and power and virtue and dominion," etc. "And he subjected all things under his feet, and gave him as head over all the Church, which is his body." Jer. 32: "O most mighty, great, and powerful, the Lord of hosts is your name, great in counsel and incomprehensible in thought." And he says especially "above the Cherubim," because he not only ascended so as to be superior to them, but because he is incomprehensible to them. "He flew, he flew" -- a double flight is understood here. First, inasmuch as his fame after the ascension grew throughout the whole world in a short time; hence he says, "upon the wings of the winds," that is, more than feathers that are scattered by the impulse of winds, because in a short time, before three years: Ps. 18: "Their sound has gone forth into all the earth," etc. Because before the destruction of Jerusalem. Or "he flew," etc., ascending into heaven, made invisible, and "he flew" from our sight: Acts 1: "A cloud received him out of their sight." Likewise "he flew upon the wings of the winds," that is, above the knowledge of the angels: Ps. 103: "Who makes his angels spirits," etc. Hence it is said in the Book of Causes (ch. 5) that the first cause is above all narration; and tongues do not fail in narrating it except because they fail in narrating its being, because it is above every cause. And the Commentator says that there is no judgment or cognition of it. "And he made darkness," etc. As was said, the things introduced here to show the wondrous power of God by which David was delivered can be referred to corporeal effects in figure and to spiritual ones in mystery. First, therefore, the Psalmist introduces, according as it is expounded regarding corporeal effects, the excellence of divine power in the air, and this in three ways: namely with respect to winds, with respect to rains and clouds, and with respect to lightning. And since the winds were treated above, we must speak of the rains in the air. According to clouds and rains, therefore, we find a twofold change in the air: one from clear to cloudy, another from cloudy to clear. First, therefore, he sets forth the first change. Second, the second, at "before the brightness." Regarding the first he does three things. First he shows the darkness of cloudy weather. Second, he employs a simile. Third, he sets forth the cause of the darkness. He says therefore, regarding the first: "He made darkness his hiding place." It is said that God dwells in heaven. Hence when the clouds hide the sky, God seems to dwell in concealment: Ezek. 32: "I will cover heaven with a cloud." And he puts the simile of a tent; and therefore he says, "Round about him is his tabernacle." For a tent is set up and taken down, like clouds. He says, "Dark water in the clouds of the air." Next he treats of the second change. "Before the brightness," etc., and he uses this simile: when light comes, darkness is expelled; and thus, when God shows his light, the darkness of the mists flees. And therefore he says, "Before the brightness in his sight the clouds passed away, before the brightness of the light from your face the clouds passed away," just as by the brightness or splendor of the sun clouds flee and melt, as is said in the book of Meteorology. Firebrands are set forth in the passing of the clouds, because hail and lightning, or fire, have a similar cause of generation. The ancients indeed say that they are generated in the highest place, which shows that a stronger congelation is caused by a stronger cold. Hence snow requires more cold than water; rain and hail more than snow; and the cold can be so great that it immediately condenses into hail; sometimes first into water and then into hail. And they say that vapors raised higher are greatly congealed, and therefore large hailstones are generated. But the Philosopher says to the contrary that they would be larger on the mountains and in winter; the contrary of which we see, because they are larger in valleys and occur in spring and autumn, and are generated in a nearby place. Likewise, according to the Philosopher, they sometimes come angular, which is a sign that they come from nearby, for the angles melt more quickly. Hence it should be known that it is natural that an opposite acts more strongly upon its opposite. Now it is certain that in the clouds cold and heat are mixed; therefore when the surrounding heat of the air compresses the cold that it cannot consume, then the cold acts interiorly while the heat surrounds it on the outside. Now falling firebrands have a twofold cause of generation: one through smoke ascending above to the place of inflammation, which is inflamed; and thus according to the inflammation it descends until it finds combustible matter. And he touched on this when he said, "Coals were kindled by him." And here he touches on another mode, which is through contrary resistance. In a cloud there is sometimes something hot, and this is compressed inwardly by the exterior cold and is multiplied, so that it brings along thick matter and falls; and therefore coals, fire, and hail have a similar generation, namely compression of cold or heat, as was said. He says therefore, "Before the brightness in his sight," etc. And these passed away together with the coal and hail, which are generated from clouds, as was said.
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