[Sam]

It is my understanding that a word for prophesy in the Old Tesament is naba (naw-baw') which means to speak by inspiration or to bubble up. Just as in the Old Testament the Spirit coming upon one could cause them to "bubble up" and speak ecstatic words and do special works, in the New Testament the Spirit coming upon us can cause us to bubble up and speak ecstatic words in tongues and/or in prophecy and do special works.