The prophet of the ancient east was considered a mediator before the supernatural, an inspired person, a communicator of divine messages. Among the ancient prophets, the Israelites stood out for their history, message and importance in literary transmission and, among them, Isaiah (8th century B.C.) was known as "the prince of the prophets". José Luis Sicre, Jesuit and professor emeritus of the Pontifical Biblical Institute in Rome, introduces the figure of Isaiah through literary, iconographic and epigraphic sources, trying to differentiate the biblical character from the historical one and taking the original texts of The Book of Isaiah as a fundamental guide.