Where does “Elisabeth” come from?

Elisabeth comes from Ancient Greek Ἐλισάβετ, which was borrowed from Hebrew אֱלִישֶׁבַע, a name of uncertain meaning.

Ancestry of “Elisabeth”, step by step

Step	Language	Word	Meaning
1	French	Élisabeth	—
2	Latin	Elisabeth	—
3	Ancient Greek	Ἐλισάβετ	—
4	Hebrew	אלישבע	my God is an oath; the Lord is her oath
5	Hebrew	אֵל	a God; God, deity; god, God
6	Hebrew	שמואל	—
7	Hebrew	שְׁמוּאֵל	—