As has already been pointed out, Jeremiah gave the prophecies and composed the narratives that constitute this book at various times during his long ministry. The date at which the book reached the state in which it is today is debatable. Most scholars believe that editors continued to add and rearrange the material long after Jeremiah's day. However, the tradition that Jeremiah was responsible for the book is old and has encouraged conservative scholars to view it as the product of the prophet himself or perhaps his scribe Baruch. If Jeremiah was the final editor of the work, as well as its writer, he completed this editorial task after his last historical reference and before his death. The last historical reference is Jehoiachin's release from captivity in Babylon (561 B.C.; 52:31-34). We do not know when Jeremiah died, but if he was born about 643 B.C., he probably did not live much beyond 560 B.C. Some scholars believe Jeremiah wrote this account himself and or that Baruch provided it. Others believe the writer of the Book of Kings added it to the collections of Jeremiah's writings.18One writer speculated that the final canonical form of the book was in circulation not later than 520 B.C.19Another believed it was available shortly after Jeremiah's death, which he guessed was about 586 B.C.20