Job 36:28

"The clouds will flow, and their shadow will darken a great multitude. If the Gospel is dark, it is only for those who perish. "He gave his time to the animal, who knows the moment of his rest. The ox has known his master, the donkey his stable (4). In all this his mind was not troubled; The fear of God is the beginning of wisdom (5). "And the flesh has not changed your heart," which must rise from the earth to the Lord.

Which flow from the clouds. Which cover all things above. For these whirlpools do indeed flow from the clouds; because, if the power of understanding did not begin with the holy Apostles, it would not flow more fully through the mouths of teachers. For by 'clouds' in Holy Scripture, sometimes fickle men, sometimes Prophets, sometimes Apostles, are designated. By clouds the fickleness of the human mind is expressed; as Solomon says, He that observeth the wind, doth not sow, and he that regardeth the clouds, doth never reap. [Eccles. 11, 4] He doubtless calls the unclean spirit, 'wind,' but men who are subjected to him, 'clouds;' whom he impels backwards and forward, hither and thither, as often as his temptations alternate in their hearts from the blasts of suggestions. He, therefore, who observes the wind, does not sow; since he who dreads coming temptations, does not direct his heart to good works. And he who regards the clouds, does not reap, since he who trembles from the dread of human fickleness, deprives himself of the recompense of an eternal reward. By 'clouds' are Prophets set forth, as is said by the Psalmist; Dark water in the clouds of the air; [Ps. 18, 11] that is, hidden wisdom in the Prophets. By 'clouds' also Apostles are designated, as is said by Isaiah, I will command the clouds that they rain no rain upon it. [Is. 5, 6] They are 'stars' then, because they shine with the merits of their life; they are 'clouds,' because they water the parched ground of our heart with the streams of heavenly knowledge. For if they were not 'clouds,' the Prophet would not have said, when looking on them, Who are these that fly as clouds? [Is. 60, 8] The whirlpools of showers pour then from the clouds, because the profound instructions of those that follow derived the origin of their wisdom from the holy Apostles. When the clouds cover the air above, if we lift up our eyes to the heaven, we behold not the heaven, but them; nor does our sight penetrate the ethereal regions, because its own infirmity conceals them from it. And when the sun shines forth from the heaven, it first feeds itself on the air which is poured between, that so it may afterwards contemplate the rays of the sun in the sky. Because, therefore, we are carnal men, when we endeavour to attain to heavenly things, we raise, as it were, our eyes to heaven, and direct our gaze thither; for…