(Old Testament) the first of the major Hebrew prophets (8th century BC)
"The prophet Isaiah wrote many passages in the Old Testament during the 8th century BC."
an Old Testament book consisting of Isaiah's prophecies
"The preacher delivered a sermon based on chapters from the Book of Isaiah."
A book of the Old Testament of the Bible, and of the Tanakh.
"Many Christians regard Isaiah as a prophetic book in the Old Testament that foretells the coming of the Messiah."
The name Isaiah comes from the Hebrew yəšaʿyā́hū, which was adopted into English via Ancient Greek. It originally meant "Yahweh saves" and has retained that meaning since its arrival in English.