I rarely try to dabble in Hebrew Bible stuff since dating issues and the like are so widely debated. However I stumbled across this article about a clay tablet confirming one of the details in Jeremiah’s account. It doesn’t prove that Jeremiah was written at the time it is portrayed to be, but it provides a little more evidence in that direction. But even more strongly, it confirms that the writer (even if later) used sources contemporary to the setting.

A Boost for the Book of Jeremiah