Means “daughter of Yahweh” in Hebrew, from the roots בַּת (bat) meaning “daughter” and יָה (yah) referring to the Hebrew God. In the Old Testament this is the name of a daughter of Pharaoh. She is traditionally equated with the pharaoh’s daughter who drew Moses from the Nile.
Either from the English occupational surname, or else directly from the English word. It is ultimately derived from Greek ἐπίσκοπος (episkopos) meaning “overseer”.