What you "believe" is not the issue. Truth is the issue. You either accept Him or reject Him. If you reject His will in matters like this, or any matter, then you reject Him.
What I reject are two thousand years of the traditions of men piled on by a hierarchy in Rome which annul the Word of God. Christ came to save us from the yoke of the world and the pharisees, not to create a new legalistic religion that can't show the grace to allow a young girl who can't digest wheat to have another grain instead.