One of the books of the Bible considered apocryphal by Jerome-supporting Protestants though accepted by Orthodox Christians.
Consists mostly of a Jewish apocalypse in which Ezra, in a series of visions, bewails the predicament of exiled Israel and looks for a messianic figure to restore the nation to its former glory.
(The Origin of the Bible: Newly Updated by F. F. Bruce, J. I. Packer, Philip W. Comfort, and Carl F. H. Henry, 2020. Old Testament and New Testament Apocrypha by R. K. Harrison, Page 86.)