Jeremiah 39:6

39:6 There at Riblah the king of Babylon had Zedekiah’s sons put to death while Zedekiah was forced to watch. The king of Babylon also had all the nobles of Judah put to death.

Jeremiah 27:20

27:20 He has already spoken about these things that King Nebuchadnezzar of Babylon did not take away when he carried Jehoiakim’s son King Jeconiah of Judah and the nobles of Judah and Jerusalem away as captives. ¹ 

[27:20]  ¹ tn 27:19-20 are all one long sentence in Hebrew. It has been broken up for the sake of English style. Some of the sentences still violate contemporary English style (e.g., v. 20) but breaking them down any further would lose the focus. For further discussion see the study note on v. 21.