Where does “Эсфирь” come from?

Эсфирь (Russian) comes from Ancient Greek Ἐσθήρ, from Hebrew אֶסְתֵּר.

Ancestry of “Эсфирь”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Ἐσθήρ	—
2	Hebrew	אֶסְתֵּר	—