'...sola scriptura, in its proper formulation as found in the thinking of the mainstream Protestant Reformers, is not what many of its modern critics or defenders imagine it is. It does not deny the necessity of traditions of biblical interpretation, credal formulations of biblical faith, and inherited church practices that help to express and pass on the faith. Rather it ensures that all those traditions serve Scripture, the supreme authority, rather than compete with it. Sola Scriptura means "Scripture supreme"'
Timothy Ward, Words of Life, p.151.