John Calvin on Jeremiah 32:27

We have already said that the verb פלא pela, admits of two meanings; it means to be hid and to be wonderful, and hence by a metaphor it means what is difficult and impossible. Many take it to mean here, that nothing escapes the observation of God. But as I have said in the last lecture, I am more inclined to refer it to God’s power, even that all things are in the hand and at the pleasure of God, so that there is no difficulty in his way. For whence comes to men so much anxiety, except that they are stopped by obstacles? but God can surmount all obstacles without any labor. That our minds then may not be perplexed, rightly is set before us the power of God.

And this meaning is most suitable to this passage: for Jeremiah, when that which seemed inconsistent occurred to him, was constrained to cast his anxiety as it were into the bosom of God. Then God, in order to relieve him, says that nothing is difficult to him, because he is the God of all flesh. Though by the words all flesh, the Scripture often means all kinds of animals, yet oftener the human race only. I do not, however, refinedly explain this passage, as though God did set the Gentiles in opposition to the Jews, and thus denied that he would be any longer the God of Abraham’s children, because he had repudiated them on account of their sins; but he says that he is in an especial manner the king of the whole earth, and rules over the whole human race. As God then, he says, is the God of all flesh, can anything be impssible to him?

Jeremiah 32:28-29

28. Therefore thus saith the LORD; Behold, I will give this city into the hand of the Chaldeans, and into the hand of Nebuchadrezzar king of Babylon, and he shall take it:

28. Propterea sic dicit Jehova, Ecce ego trade urbem hanc in manum Chaldaeorum et in manum Nebuchadnezer regis Babylonis, et capiet eam;

29. And the Chaldeans, that fight against this city, shall come and set fire on this city, and burn it with the houses, upon whose roofs they have offered incense unto Baal, and poured out drink offerings unto other gods, to provoke me to anger.

29. Et ingredientur Chaldaei, qui oppugnant urbem hanc, et succendent urbem hanc igne, et exurent eam, et domus in quibus suffitum fecerunt super tecta ipsarum Baal, et libamen libarunt diis alienis ad me provocandum.