Thus says the LORD of hosts;
The children of Israel and the children of Judah were oppressed together: and all that took them captives held them fast; they refused to let them go.
Read Chapter 50
George Leo Haydock
Israel. Samaria had been destroyed forty-four years before the fourth of Joakim, from which period many of Juda had been captives seventy years, till Cyrus became their deliverer, and chastised the Chaldeans. (Calmet)
Both kingdoms had been oppressed by a strong hand, till a stronger, even God himself, delivered them. (Worthington)