NET

1 In the fourth year that Jehoiakim son of Josiah was king of Judah, the Lord spoke to Jeremiah concerning all the people of Judah. (That was the same as the first year that Nebuchadnezzar was king of Babylon.)

Darby

1 The word that came to Jeremiah concerning all the people of Judah, in the fourth year of Jehoiakim the son of Josiah, the king of Judah (that is, the first year of Nebuchadrezzar king of Babylon),

KJV

1 The word that came to Jeremiah concerning all the people of Judah in the fourth year of Jehoiakim the son of Josiah king of Judah, that [was] the first year of Nebuchadrezzar king of Babylon;