Synopsis of the Books of the Bible, by John Nelson Darby, [1857-62], at sacred-texts.com
The following commentary covers Chapters 19 and 20.
Chapters 19 and 20 shew us the judgment of Jerusalem announced in terms that require little explanation; and we have in chapter 20 a sample of the opposition of the priests, and of Jeremiah's sufferings. But this does not prevent Jeremiah's denouncing the priest himself, and repeating that which he had said of Jerusalem. Nevertheless we see the effect of these sufferings on his heart. He was compelled, as it were, by the Lord to bear this testimony. He has not (and it is the same with the remnant) the willing spirit that rejoices in tribulation by the power of the Holy Ghost. He was the subject of constant mockery. They watched for his halting, so that he would gladly have been silent; but the word of Jehovah was like fire in his bones. Alas! we understand all this-the deep iniquity of the men who are called the people of God; the way in which the feeble heart recoils before this iniquity, that has neither heart nor conscience; and how on these occasions the word is too strong in us to be shut up in our heart. Nevertheless with all this fear he had also the consciousness that Jehovah was with him, and he again asks for vengeance (which, in fact, is deliverance, and the only deliverance of those who have the testimony of Christ in such a position). This deliverance is celebrated in Verse 13 (Jer 20:13); but in Verses 14-18 (Jer 20:14-18), we see to what a point personal grief may drive those who are subjected to such a trial as this. See the same thing in Job-a picture of the same condition, that is to say, of a soul tried by all the malice of Satan, without the full knowledge of grace, in the sense of its own nothingness, and in the forgetfulness of self. This will be precisely the state of the remnant in the last days. Christ is the model of perfection in what answered to these circumstances of trial, the reality of which He thoroughly experienced and felt, when He had yet to undergo for others what laid the foundation of grace for them.