The form of address, Reverend, means that the person deserves reverence; originated in the Catholic Church; but for many, many years now, has been accorded to both Priests, and to Protestant ministers. A Catholic Priest may be addressed verbally as Father, or as Reverend, and in writing as Father (Fr.), as Reverend Father (Rev. Fr.), or as Reverend (Rev.). Our word pastor is taken from the Latin word pastor (pah-store), and means shepherd, so most correctly is applied only to a member of the clergy who is in charge of a local Church or Churches. A Catholic diocesan Bishop or Archbishop is the chief Pastor of his diocese or Archdiocese; and the Pope is the chief Pastor of the whole Catholic Church worldwide. This is it, in a nutshell. I hope it helps. Frank
Depends on who's usage you want to talk about. From the Bible the pastors are the elders/shepherds/overseers/bishops (cf. 1 Timothy 3:1-7, Titus 1:5-9). The religious world today uses the title to denote various people (even women-see 1 Timothy 3:2 the husband of one wife!). Again the religious world sets up a title "reverend" or "the right reverend" to give special attention to a person. Many people that I know would take exception to that usage (cf. Psalms 111:9 "He sent redemption unto his people: he hath commanded his covenant for ever: holy and reverend is his name." KJV, obviously referring to God, NOT any man!