John Calvin's Bible Commentary
Jeremiah 27:5
Then follow these words, I have made the earth, the man and the beast, which are on the face of the earth, by my great power, and by mine extended arm. (179) The spectacle would have been unmeaning and to no purpose, had Jeremiah only put the yoke on his neck, and added no instruction; for we know that all signs are as it were dead, except life is given them by the word. As then an image avails not much, so whatever signs may be set before our eyes, they would be frivolous and without meaning, were no doctrine added as the life. And hence also is condemned the madness of the Papists, who amuse the minds of the people with many signs, while no doctrine is conveyed. It therefore follows that they are mere figments, and attended with no profit. God, then, has ever added to signs his doctrine, which may therefore be truly compared to the soul, which gives life to the body, that would otherwise be without motion or strength. On this account Jeremiah shews what the yoke meant. He also speaks of the power and sovereign authority of God; for kings, though they confess that God holds the government of the world, cannot yet entertain the idea that they can be in a moment overwhelmed and cast down from their dignity. For they seem to themselves to be fixed in their nests, and so they promise to themselves a permanent condition, and imagine that they are not subject to the common lot of mortals.
As, then, kings are so inflated with pride, the Lord used this preface, that he made the earth and all living beings. He speaks not of heaven, but mentions only that he made the earth, and man, and the animals which are on the face of the earth; and adds, by my great power and extended arm Why was this said, except that men might be awakened on hearing that the earth continues not as it is, but as it is sustained by God’s power by which it was once created? The same power preserves men and animals; for nothing can remain safe except God exercises from heaven his hidden power. This, then, was the reason why these words were introduced. God set his own arm and power in opposition to the pride of those who thought that they stood by their own power, and did not acknowledge that they were dependent on the nod of God alone, who sustained them as long as he pleased, and then overthrew and reduced them to nothing when it seemed good to him.
This doctrine, then, ought to be applied to ourselves: for Jeremiah did not speak generally and indiscriminately of God’s power, but accommodated to the subject in hand what he said of God’s power, that men might, know that there is nothing fixed or permanent in this world, but that God preserves men and animals, and yet in such a way, that at any moment he can by a single breath reduce to nothing all those who exist and all that they have. It follows —