Any attempt to confess what one believes is a creed. Saying "no creed but Christ" is just as much a creed as a written statement is a creed. You should see the self-contradictory problem with saying "no creed but Christ." Even though it is shorter and rather ill-conceived it is nonetheless a confession or creed. Hence, rather than liberating themselves from the snares of creeds, those who say this have actually entangled themselves in a poorly conceived one.--Faith of Our Fathers: A Study of the Nicene Creed by L. Charles Jackson, p.2
The Scriptures say in James 2:19, "You believe that there is one God. You do well. Even the demons believe--and tremble! It is never enough to say that you "believe." The real question remains: what do you believe about Jesus?
(You can read the first chapter from this book here.)