Then the Lord said unto me “Here begins an entire new section, or distinct prophecy, which is continued to the end of the sixth chapter. It consists of two distinct parts. The first part contains a complaint against Judah for having exceeded the guilt of her sister Israel, whom God had already cast off for her idolatrous apostacy, Jeremiah 3:6-12. The prophet is hereupon sent to announce to Israel the promise of pardon upon her repentance, and the hopes of a glorious restoration in after times, which are plainly marked out to be the times of the gospel, when the Gentiles themselves were to become a part of the church, Jeremiah 3:12-21. In the second part, which begins Jeremiah 4:3, and is prefaced with an address to the people of Judah and Jerusalem, exhorting them to prevent the divine judgments by a timely repentance; the Babylonian invasion is clearly and fully foretold, with all the miseries which it would be attended with; and the universal and incorrigible depravity of the people is represented at large, and pointed out as the justly provoking cause of the national ruin.
In the days of Josiah the king This date of the prophecy, or sermon, must be particularly observed, in order to the right understanding of it. It was delivered in the days of Josiah, who began a blessed work of reformation, in which he was hearty; but the people were not sincere in their compliance with it. To reprove them for that, and warn them of the consequences of their hypocrisy, is the scope of that which God here declares to the prophet, and which he delivers to them. Hast thou seen what backsliding Israel hath done The case of the two kingdoms of Israel and Judah is here compared, the ten tribes that revolted from the throne of David and the temple at Jerusalem, and the two tribes that adhered to both. The distinct history of these two kingdoms is given us in the two books of the Kings; by referring to the notes on which the reader will be enabled the better to understand this paragraph, and many other parts of this prophecy. When God asks, Hast thou seen what Israel has done? he refers to the prophet's acquaintance with that history, for as he lived between sixty and seventy years after Israel was carried into captivity, he could not otherwise see what they had done. She hath gone up upon every high mountain: &c. See note on Jeremiah 2:20. They had openly, and almost with common consent, apostatized from the worship appointed by God, insomuch that all their kings proved wicked and idolatrous: and no marvel, since from the time of their defection from the kingdom of David, they worshipped God by the golden calves at Dan and Beth-el, and hence easily proceeded from worshipping by the medium of images, to worship images themselves, and other false and imaginary deities.