Where does “Izaiah” come from?

Izaiah (English) comes from English Isaiah, from Ancient Greek Ἠσαΐας, from Hebrew יְשַׁעְיָהוּ.

Ancestry of “Izaiah”, step by step

Step	Language	Word	Meaning
1	English	Isaiah	—
2	Ancient Greek	Ἠσαΐας	—
3	Hebrew	יְשַׁעְיָהוּ	—

Izaiah — Etymology, Origin & Word History | Etymology Explorer