The Book of Isaiah is a book of the Hebrew Bible and the Christian Old Testament. It is a collection of prophecies and teachings attributed to the prophet Isaiah, who lived in the 8th century BCE and served as a prophet and adviser to the kings of Judah.
The Book of Isaiah covers a wide range of subjects, including the judgment and redemption of God's people, the coming of the Messiah, and the restoration of the Kingdom of God. The book includes a number of prophecies about the Babylonian exile and the return of the Jews to their homeland, as well as visions of the future restoration and prosperity of the kingdom of God.
Key figures in the book of Isaiah include Isaiah, as well as the kings of Judah, including Ahaz, Hezekiah, and Manasseh. The book also mentions various other individuals, such as the Babylonians, the Persians, and the Messiah, who are the subjects of the prophet's teachings and prophecies. The book also includes a number of references to God and his actions, as well as expressions of trust and reliance on him.