Prove It! Church

What do you say when someone tries to tell you: "You're not a Christian because your church isn't Bible-based?""You're not a Christian because what your church teaches isn't in the Bible?""You're not a Christian because you believe that good works will get you to heaven?" "You're not a Christian because you worship Mary like a goddess?""You're not a Christian because you believe that the pope is right about everything?""You're not a Christian because you obey the pope instead of God?" And the bi