From the Hebrew name יְשַׁעְיָהוּ (Yesha'yahu) meaning "YAHWEH is salvation", from the roots יָשַׁע (yasha') meaning "to save" and יָה (yah) referring to the Hebrew God. Isaiah is one of the four major prophets of the Old Testament, supposedly the author of the Book of Isaiah.
Isaias is the Late Latin and Spanish form of the Hebrew name Isaiah and used in some versions of the Bible. Isaiah was one of the most important of the Major Prophets in the Old Testament or Hebrew Bible. The name comes from Hebrew “Yeshayahu†meaning 'God is salvation.'
Hebrew Meaning: The name Isaias is a Hebrew baby name. In Hebrew the meaning of the name Isaias is: God's helper.
Meaning of the name Isiah Variant of Isaiah, the name means God is my savior. It is a major biblical name as Isaiah is one of the most important prophets. Origin of the name Isiah Hebrew.