Jeremiah 52:4

4 And it cometh to pass, in the ninth year of his reign, in the tenth month, in the tenth of the month, come hath Nebuchadrezzar king of Babylon -- he and all his force -- against Jerusalem, and they encamp against it, and build against it a fortification round about;

Jeremiah 52:4 Meaning and Commentary

Jeremiah 52:4

And it came to pass in the ninth year of his reign
Of Zedekiah's reign: in the tenth month, in the tenth [day] of the month;
the month Tebet, which answers to part of December and part of January; hence the fast of the tenth month, on account of the siege of Jerusalem, ( Zechariah 8:19 ) ; [that] Nebuchadrezzar king of Babylon came, he, and all his army,
against Jerusalem;
from whence it appears that he came in person with his army at first to Jerusalem; but, during the siege, or some part of it, retired to Riblah; perhaps upon the news of the king of Egypt's coming to the assistance of the Jews: and pitched against it;
or encamped against it: and built forts against it round about;
wooden towers, as Jarchi and Kimchi explain it; from whence they could shoot their arrows and cast their stones.

Jeremiah 52:4 In-Context

2 and he doth the evil thing in the eyes of Jehovah, according to all that Jehoiakim hath done,
3 for, because of the anger of Jehovah, it hath been in Jerusalem and Judah till He hath cast them from before His face, and Zedekiah doth rebel against the king of Babylon.
4 And it cometh to pass, in the ninth year of his reign, in the tenth month, in the tenth of the month, come hath Nebuchadrezzar king of Babylon -- he and all his force -- against Jerusalem, and they encamp against it, and build against it a fortification round about;
5 and the city cometh into siege till the eleventh year of king Zedekiah.
6 In the fourth month, in the ninth of the month, when the famine is severe in the city, and there hath been no bread for the people of the land,
Young's Literal Translation is in the public domain.