There is one way, and one way only, for men to obtain salvation - or is there?

Is this statement a true one, as valid today as it was when the authors of the Statement of Faith wrote? This statement might be though as the very foundation, underpinning al other tenets of the Christadelphian fiath, yet today this same truth is being made of "none effect" by doctrines which have almost surreptitiously interposed themslevs into our ways of thinking.