A wonderful God we have providing proof from the book that he provides multiple means for His creation to experience personal salvation. That is proof in my mind and heart that faith in the Bible alone is an inadequate faith.
Salvation is an inner work of God in a person, not rigidly following and spouting pompous understanding and opinions from a religious book.
However useful the Bible and other religious artifacts, rituals, and traditions, written and oral, were in my life. Until God did the inner work to my innermost self I remained lost, when He did the inner work I finally surrendered to and experienced His personal salvation in my life.