For, behold, he who forms the mountains, And creates the wind, And declares to man what is his thought; Who makes the morning darkness, And treads on the high places of the Earth: Yahweh, the God of hosts, is his name."
But what the Prophet says, that God announces to men what their thought is — this is done in various ways. We indeed know that the end of teaching is, that men may confess their guilt, who before flattered themselves; we know also that the word of God is like a two-edged sword, which penetrates into the bones and marrow, and distinguishes between thoughts and feelings, (Hebrews 4:12) God then thus draws men out of their recesses into the light; and he also convinces them without the word; for we know how powerful are the secret movements (instinctus — influences) of the Spirit. But the Prophet meant only here, that the Israelites had to do with God, who is the searcher of hearts, and from whom nothing is hid, however concealed it may be. Each one is to himself the best witness of his own thoughts; but the Prophet ascribes to God a higher degree, for he understands whatever any one conceives in his mind, better than he who seems to have all his own thoughts well understood. (30) Since men therefore craftily hide themselves, the Prophet here reminds them that they cannot succeed, for God understands what they inwardly think better than they themselves. We now then perceive what he substantially means. 