John Calvin's Bible Commentary
Jeremiah 38:2
We have seen elsewhere that the Prophet had before said the same; it was not, then, a new thing, for he had thirty years before that time dearly pronounced the same in the Temple, and it was then written as a prophecy and fixed to the doors of the Temple. It was, therefore, nothing new to hear all this from the mouth of Jeremiah. But as I have already said, the king and his couriers thought that he was so subdued by evils that he could hardly open his mouth. In short, they thought that the holy man had, in a manner, lost his tongue since he had been in prison. This, then, was the reason why they now accused him so gravely to the king, and declared him worthy of death. He had deserved death many years before, if he had now committed a capital offense. But as I have already stated, they regarded the Prophet as having designedly despised the king’s authority, and they were indignant because he could not be subdued, when yet he was a prisoner and might see danger at hand every hour. This, then, was the reason why they regarded as a new thing what Jeremiah said, Whosoever abides in the city shall perish, etc.
As to these threatenings, we have elsewhere said, that all those who expected help from the Egyptians were willful despisers of God; for the Prophet had often exhorted them all, quietly and submissively to bear that temporary punishment which God had resolved to inflict on them. They wished in their perverseness to drive to a distance God’s judgment, and then when they saw that God was their enemy, they deemed it enough to have the Egyptians as their friends. It was then no wonder that the Prophet allotted to them the sword, and famine, and pestilence.
He then adds, Whosoever passeth over to the Chaldeans shall live The condition, however, was very hard; his soul, he says, shall be for a prey, as though he had said, “He who flees to the Chaldeans shall only save his life, but must suffer the loss of all his property,” as when a shipwreck is dreaded, there is no one who is not ready to save his life at the loss of all his goods; and, therefore, in extreme danger the merchants are wont to cast into the sea all that they have, for they prefer to escape to the harbor empty and destitute of everything, than to perish together with their riches. It was, then, a hard condition; but the Prophet shews that they could not otherwise escape; they were to give up their own country, and all other things, and could only preserve their life. For this reason he says, that their life would be for a prey to them, as when anything is snatched from the fire, or as when one is exposed to plunder, he were content to take something away by stealth, for otherwise, if he sought to take away many things, he would have to contend with many enemies. The Prophet then intimates that the Jews could not save themselves from death in any other way than by casting away all they had, and by being solicitous only to save life. He again repeats, he shall live. By this repetition he more pressingly urged them, and with more earnestness exhorted them to save their life.