Where does “Ἰαρέδ” come from?

Ἰαρέδ (Ancient Greek) comes from Hebrew ירד, from Hebrew י־ר־ד.

Ancestry of “Ἰαρέδ”, step by step

Step	Language	Word	Meaning
1	Hebrew	ירד	To go down, descend; To go down, decline,...
2	Hebrew	י־ר־ד	—

Ἰαρέδ — Etymology, Origin & Word History | Etymology Explorer