commonly I hear that being a pastor (minister, reverend, priest, etc...) is liken to something refereed to as a "call" from God. These people are called men/women of God and have responded to what is considered a higher call to Christian living and leadership one what that seems to be not shared or at least on a different level than with the common folk sitting in the pews. Your tradition may have it's own slang for such things but regardless of the words you use how does scripture support this perspective?