‘scholar’:
Far better to stick to the biblical account
Okay. The biblical account of the Neobabylonian period indicates that all the nations would serve Babylon for 70 years (Jeremiah 25:11) until Babylon was conquered by Persia (Jeremiah 25:12; 2 Chronicles 36:20). During that time, nations could avoid exile by serving Babylon (Jeremiah 27:8-11). After Babylon’s 70 years ended, attention would be given to the Jews’ return (Jeremiah 29:10; 2 Chronicles 36:21). Since it is known that Babylon was conquered by Persia in 539BCE, Babylon’s 70 years therefore began with its defeat of Assyria’s last king in 609BCE.