When Is A Call A Call?

This past week we discovered that at least three of the major prophets (Isaiah, Jeremiah, and Ezekiel) all had common elements to their calling:

Set in specific date and time

Prophet Visited by vision

Prophet overwhelmed by vision and/or call

Prophet sent by God’s Spirit/voice

Prophet must speak God’s word

People would not listen

Contains symbolized action regarding word

God Addresses fear

God responds to protest/questions

God addresses weakness

Prophet expresses willingness

So here is the question: which of these elements (if any) should we expect when receiving a call from God to do something? To put it differently: Which elements are unique to the prophetic call and which are common to all calls?