Before we have the written Word, we had Prophets who spoke God's word to us. Many times their words were authenticated by miracles, signs and wonders. But in the first century the bible, as we accept it now was completed. No Prophets exist because they could write and add to the Inspiried Word. So what do the prophets of 1 Corinthians 14:3 do? They teach God's word in truth. They do not introduce destructive heresies. They build up the Church.
Since anyone can read and offer their view of what a passage actually means, a prophet would offer a view that would be close enough to the truth to build up as opposed to tear down those who accept the view.
In summary, 1 Cor. 14:3 is telling us of those who speak the truth of God's word. This has absolutely nothing to do with divine inspiration to relate to men God's new declarations of the end from the beginning.
Baptists believe in scripture alone as our authority, so guys who claim they are giving us new revelation are not Baptists.
Are though baptists like me that would hold that one can be gifted by the HS to "prophesy:, but that would today be akin to be able to take the Bible and speak it into current events/culture etc!, foretelling, NOT forthtelling!