Isaiah (US /aɪˈzeɪ.ə/ or UK /aɪˈzaɪ.ə/;Hebrew: יְשַׁעְיָהוּ/span, Modern Yeshayahu Tiberian Yəšạʻyā́hû ; Syriac: ܐܫܥܝܐ Eshaya; Greek: Ἠσαΐας, Ēsaïās; Arabic: إشعيا Ishiya; "Yah is salvation") was a prophet said by the Biblical Book of Isaiah to have lived in the 8th-century BC Kingdom of Judah.The exact relationship between the Book of Isaiah and any such historical Isaiah remains the subject of ongoing scholarly discussion.