Middle English word bishop comes from Latin episcopus, and later Old English biscop (Bishop.)

Detailed word origin of bishop

Dictionary entry	Language	Definition
episcopus	Latin (lat)	(Late Latin) an overseer, supervisor, bishop in a Christian church who governs a diocese. (Medieval Latin, chess, uncommon) a bishop.
ebiscopus	Latin (lat)
biscopus	Vulgar Latin (la-vul)
biscop	Old English (ang)	Bishop.
biscop	Middle English (enm)

Words with the same origin as bishop