The Christological trilemma (Lord, Liar, or Lunatic — associated with C.S. Lewis, likely originating with G.K. Chesterton) is built on the historical evidence that Jesus made both messianic and divine identity claims. He cannot have been lying — he made his violent death by the very authorities whose power he claimed to supersede a core part of his mission, which an impostor would never do. Mark 8's double rebuke (Peter rebukes Jesus; Jesus rebukes Peter as "Satan") shows this is not a later invention.