Where does “Ἠσᾰΐᾱς” come from?

Ἠσᾰΐᾱς (Ancient Greek) comes from Hebrew יְשַׁעְיָהוּ.

Ancestry of “Ἠσᾰΐᾱς”, step by step

Step	Language	Word	Meaning
1	Hebrew	יְשַׁעְיָהוּ	—

Ἠσᾰΐᾱς — Etymology, Origin & Word History | Etymology Explorer