Synopsis of the Books of the Bible, by John Nelson Darby, [1857-62], at sacred-texts.com
The end of Jeremiah has given us an account of the fulfilment of Ezekiel's words; but all these judgments give room for the intervention of God in behalf of His people by means of sovereign grace accomplished in the Messiah. Still the evil lay in the shepherds, that is, in the kings and princes of Israel, who were not true shepherds (indeed there were none true); and the flock, diseased, scattered, afflicted, and ill-treated, were a prey to their enemies. The shepherds devoured them, and neither protected nor cared for them. But Jehovah now points it out in order to say that He Himself would seek out His poor sheep, and would judge between sheep and sheep, and would deliver them from the mouth of those that devoured them [See Note #1], and that He would feed them upon the mountains of Israel, and in fat pastures. He would raise up the true and only shepherd, David (that is, the well-beloved Messiah). Jehovah should be their God, and His servant David their prince. The covenant of peace should be re-established; full and secure blessing should be the abiding portion of the people of God, the house of Israel. There should be no more famine in their land, and the nations should no more devour them. Observe here the way in which Jehovah Himself delivers His sheep, without calling Himself their shepherd, and then raises up a plant of renown, the true David, as their shepherd.
Note #1
The thirty-third chapter having stated the great principles of God's dealings in the last days, namely, individual condition before God, chapter 34 exhibits the conduct of their leaders: Jehovah judges the latter as having misled and oppressed His people; He discerns Himself "between cattle and cattle." Then in chapter 35 Edom is judged (compare Isaiah 34). Here, in general, it is the effect, relating to all Israel ("these two countries"). In chapter 36 is the moral renewing of all Israel, that they may judge their ways; in chapter 37, the restoration of the people, as quickened by God in national resurrection; and at last (chaps. 38 and 39) the judgment of the enemies of the people thus restored in peace, or rather, of the enemy (that is, Gog). All these things are connected with the relationship between Jehovah and His people Although He gives David as king, yet the Messiah is not named as having had relations with the people; for in fact this was only true of Judah. It is a general picture of the last days in their great results and their events, everything having its place in reference to all Israel, without giving a history of details.