You may well be right, Vesper...in fact, with a religion-related name such as Vesper you probably are! I could scarcely be more opposite in religious terms. Consequently, I merely found the source of the quote, read the appropriate verse and took the words "ye yourselves are wise" at face value. I had and have no interest in the context.
My apologies, Fruitsalad, if I misled you, but my error of interpretation made no difference to what the source of the saying is nor to its current meaning