Jamieson, Fausset and Brown on 2 Kings 25:8-18

8-18. on the seventh day of the month ... came Nebuzar-adan--(compare Jr 52:12). In attempting to reconcile these two passages, it must be supposed either that, though he had set out on the seventh, he did not arrive in Jerusalem till the tenth, or that he did not put his orders in execution till that day. His office as captain of the guard (Ge 37:36; 39:1) called him to execute the awards of justice on criminals; and hence, although not engaged in the siege of Jerusalem (Jr 39:13), Nebuzar-adan was despatched to rase the city, to plunder the temple, to lay both in ruins, demolish the fortifications, and transport the inhabitants to Babylon. The most eminent of these were taken to the king at Riblah (2Ki 25:27) and executed, as instigators and abettors of the rebellion, or otherwise obnoxious to the Assyrian government. In their number were Seraiah, the high priest, grandfather of Ezra (Ezr 7:1), his sagan or deputy, a priest of the second order (Jr 21:2; 29:25, 29; 37:3).