You keep telling me that, as a Christian, I need to be able to back up my beliefs using solely the Bible. Well, that's where you're wrong. I can back up my beliefs using any sources I choose, particularly since the Bible itself says nothing about being the sole source of God's word.
Wow. That's profound, Einstein. But in the cast of Christianity, there are Roman Catholic Christians, Eastern Orthodox Christians, Protestant Christians, LDS Christians and JW Christians -- all of them professing a belief of Jesus Christ, but all having differences in doctrine.
However, since you insist on making a distinction between "Christianity" (aka Jehovah's Witnesses) and "Christendumb" (aka every other Christian denomination), and have already alienated virtually everyone except JWs, you might as well just acknowledge that your definition of who is and is not a "Christian" is entirely immaterial, not only to me, but to everybody else on this forum.
Now, will you PLEASE stop harassing me!