For lo, He that formeth the mountains - Their God whom they worshiped was but nature. Amos tells them, who “their God” is, whom they were to prepare to meet. He describes Him as the Creator of that, which to man seems most solid, to go furthest back in times past. Before the everlasting mountains were, God is, for He made them. Yet God is not a Creator in the past alone. He is a continual Worker. “And formeth the wind,” that finest subtlest creature, alone invisible in this visible world; the most immaterial of things material, the breath of our life, the image of man’s created immaterial spirit, or even of God’s uncreated presence, the mildest and the most terrific of the agents around us. But the thought of God, as a Creator or Preserver without, affects man but little. To man, a sinner, far more impressive than all majesty of Creative power, is the thought that God knows his inmost soul. So he adds; “and declareth unto man what is his thought,” that is, his meditation, before he puts it into words. God knows our thoughts more truly than we ourselves. We disguise them to ourselves, know not our own hearts, wish not to know them. God reveals us to ourselves. As He says, “The heart is deceitful above all things; who can know it? I, the Lord, search the heart; I try the reins, even to give every man according to his ways and according to the fruit of his doings” Jeremiah 17:9-10. Man’s own conscience tells him that God’s knowledge of His inmost self is no idle knowledge. “If our heart condemn us, God is greater than our heart and knoweth all things” 1 John 3:20.
That maketh the morning darkness - If the light become darkness, how great that darkness! From the knowledge of man’s heart, the prophet goes on to retribution. Morning is the symbol of all which is beautiful, cheering, radiant, joyous to man; darkness effaces all these. Their God, he tells them, can do all this. He can quench in gloom all the magnificent beauty of His own creation and make all which gladdened the eyes of man, “one universal blot.” “And treadeth upon the high places of the earth.” He “treadeth” them, to tread them under. He humbleth all which exalteth itself. “God walketh, when He worketh. He is without all, within all, containeth all, worketh all in all. Hence, it is said, “He walketh on the wings of the wind Psalms 104:3; He walketh on the heights of the sea Job 9:8; He walketh on the circuit of heaven” Job 22:14.
Such was He, who made Himself “their God,” The Author of all, the Upholder of all, the Subduer of all which exalted itself, who stood in a special relation to man’s thoughts, and who punished. At His command stand all the hosts of heaven. Would they have Him for them, or against them? Would they be at peace with Him, before they met Him, face to face?