I have a friend who believes the if you deny Jesus is your savior you are no longer a Christian, but in my opinion if you deny Jesus is your savior or Lord you were never a Christian.
ESV - 8 The beast that you saw was, and is not, and is about to rise from the bottomless pit and go to destruction. And the dwellers on earth whose names have not been written in the book of life from the foundation of the world will marvel to see the beast, because it was and is not and is to come.
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