Sentence:  This is not to say that the only <WSD>explanation</WSD> of the present infatuation with Norman Vincent Peale 's `` cult of reassurance '' or the other types of a purely cultural Christianity is the ever-present need for a demythologized gospel . 
Meaning of the word marked with <WSD> tags:  a statement that makes something comprehensible by describing the relevant structure or operation or circumstances etc.