Charles Ellicott Commentary Jeremiah 50:4

"In those days, and in that time, saith Jehovah, the children of Israel shall come, they and the children of Judah together; they shall go on their way weeping, and shall seek Jehovah their God." — Jeremiah 50:4 (ASV)

The children of Israel shall come ... —The union of the divided sections of the people is significant as being that which the prophet had all along hoped for (Jeremiah 3:14–16). And the united people are to return with tears of mingled joy and penitence (Ezra 8:21–23), no longer worshipping Baal and the queen of heaven (Jeremiah 7:18; Jeremiah 44:17), but seeking Jehovah their God.