Isaiah

Isaiah, Hebrew prophet of the 8th century B.C. for whom the Old Testament Book of Isaiah was named; probably only the first 36 chapters represent his teachings, the remainder (often known as Deutero- and Trito-Isaiah) being additions by his followers. Isaiah condemned the decadence of the kingdom of Judah, foretelling coming disaster; he warned against trusting in foreign alliances rather than in God, and heralded the Messiah.