47. “If you believe not his writings,” in My favour, which you receive as authoritative. If you believe not Him whom you place far above Me, “how will you believe My words?” not, My writings. Our Lord had not written anything, save the few words (John 8:6). Our Lord, here has recourse to an argumentum ad hominem, in which He makes a comparison between Himself and Moses, between words and writing. The Jews could easily have seen, that our Lord was referred to by Moses, had they approached this solemn
John 5:47