活動時期西元前8世紀

　　古代以色列先知，《舊約》中的〈以賽亞書〉即以其名命名。據說該書前39章是他所著；其他部分的作者不詳。西元前742年左右以賽亞受應召成為先知，當時亞述開始向西擴張，稍后便侵略以色列。與阿摩司同時期，以賽亞揭發了猶太人經濟和社會的不公，并敦促他們遵守律法否則將承擔取消與上帝約定的風險。他正確的斷言以色列北部撒馬利亞于西元前722年毀滅，他還宣布亞述人將是行使上帝的懲罰的工具。基督教〈福音書〉引用〈以賽亞書〉比其他先知書多，它的“將刀打成犁頭”至今仍為人們所傳誦。

　　Prophet of ancient Israel after whom the biblical Book of Isaiah is named. He is believed to have written only some of the book's first 39 chapters； the rest are by one or more unknown authors. Isaiah's call to prophesy came c. 742 BC， when Assyria was beginning the westward expansion that later overran Israel. A contemporary of Amos， Isaiah denounced economic and social injustice among the Israelites and urged them to obey the Law or risk cancellation of God's covenant. He correctly predicted the destruction of Samaria， or northern Israel， in 722 BC， and he declared the Assyrians to be the instrument of God's wrath. The Christian Gospels lean more heavily on the Book of Isaiah than on any other prophetic text， and its “swords-into-plowshares” passage has universal appeal.