Jeremiah proceeds in the same strain; for he sets before the eyes of the Jews the judgment of God, and draws them, as it were against their will, into the middle of the scene. And this was done by the prophets, as it has been already said, because by plain words they could not move the hearts of the people on account of their contempt of God, and of the long obduracy in which they had settled. Hence he says, that heard had been the report of the enemy, and that immediately dissolved had their hands When the Prophet spoke, the Jews did not think that their enemies were so near. But the phrase is to be thus explained: "As soon as ye shall hear the report, your hands shall be relaxed, and lay hold on you shall distress." The similitude of a woman in travail is often found in Scripture; and what is to be understood in most places is sudden and unexpected pain: but in this place the Prophet refers rather to the violence of pain; though the other meaning, which I have just stated, is not to be excluded; for it is probable, that when he saw that the hardness and obstinacy of the people were so great, he adopted this similitude, in order to shew, that however heedlessly they despised the punishment due to them, it could not yet be avoided, as it would seize them suddenly like that of a woman in childbearing. He afterwards adds --

The effect upon the Jewish people of the news of Nebuchadnezzars approach.
Wax feeble - Are relaxed. It is the opposite of what is said in Jeremiah 6:23 of the enemy, "They lay hold etc." Terror makes the hands of the Jews hold their weapons with nerveless grasp.

We have heard the report of it: our hands become (t) feeble: anguish hath taken hold of us, [and] pain, as of a woman in travail.
(t) For fear of the enemy: he speaks this in the person of the Jews.

We have heard the fame thereof,.... Meaning not the prophet's report then, but the rumour of the enemy's coming from another quarter, at the time he was actually coming. These are the words of the people, upon such a rumour spread; or the words of the prophet, joining himself with them, describing their case, when it would be strongly reported, and they had reason to believe it, that the enemy was just coming, and very near:
our hands wax feeble; have no strength in them, shake and tremble like men that have a palsy, through fear and dread:
anguish hath taken hold of us; tribulation or affliction; or rather anguish of spirit, on hearing the news of the near approach of the enemy:
and pain, as of a woman in travail; which comes suddenly, and is very sharp; and this denotes that their destruction would come suddenly upon them, before they were aware, and be very severe.

fame thereof--the report of them.

We - The prophet personates the peoples affections.