Charles Ellicott Commentary Jeremiah 50:1

"The word that Jehovah spake concerning Babylon, concerning the land of the Chaldeans, by Jeremiah the prophet." — Jeremiah 50:1 (ASV)

By Jeremiah the prophet. —Literally, by the hand of Jeremiah. The phrase is not found elsewhere in Jeremiah’s writings, with the one exception of Jeremiah 37:2. It probably indicates that the prophecy that follows was written with his own hand, and not dictated. (See Jeremiah 51:60.)