Pastor
late Middle English: from Anglo-Norman French pastour, from Latin pastor ‘shepherd’, from past- ‘fed, grazed’, from the verb pascere .
wiktionary
From Middle English pastour, from Old French pastor (Modern French pasteur), from Latin pāstor.
etymonline
pastor (n.)
late 14c. (mid-13c. as a surname), "shepherd, one who has care of a flock or herd" (a sense now obsolete), also figurative, "spiritual guide, shepherd of souls, a Christian minister or clergyman," from Old French pastor, pastur "herdsman, shepherd" (12c.) and directly from Latin pastor "shepherd," from pastus, past participle of pascere "to lead to pasture, set to grazing, cause to eat," from PIE root *pa- "to feed; tend, guard, protect." Compare pasture.
The spiritual sense was in Church Latin (e.g. Gregory's "Cura Pastoralis"). The verb in the Christian sense is from 1872.
