Credo

Reviewing a book by Anthony Thiselton, Scot McKnight discusses what it means to "believe" something and observes that:

.... Orthodoxy, then, is not just something we confess when we say the Nicene Creed; orthodoxy is the disposition that we confess and live and perform in such a manner that anyone who denies what we "believe" will see our response in word and deed. We are not orthodox because we have never denied orthodoxy; we are orthodox because our disposition of belief, what we say and how we live, reveals our orthodoxy. .... [more]

But someone will say, “You have faith and I have works.” Show me your faith apart from your works, and I will show you my faith by my works." James 2:18

Belief that doesn't affect behavior is not belief at all.

Performing Orthodoxy | Christianity Today | A Magazine of Evangelical Conviction