You have that backwards, my friend. Before there was ever a King James Bible, there was Christ. Before there was an Old Testament, there was Christ. If I have never seen or read a Bible, and yet I have Christ in my heart, I have His Word. It is written on my heart, the way God intended it. Earlier, some one pointed out to you that, say a mentally handicapped person who cannot read or comprehend what they are reading can still be a Christian, because if Christ is in their heart then so is his word.
And before there was a Jerome Latin Vulgate, there were old Latin Bibles, and Greek Bibles, and Syriac, . . . .