What does John 6:42 mean?
Jesus' boyhood home of Nazareth was probably just to the southwest of the Sea of Galilee. Capernaum was a fishing town situated along the northwest edge of Galilee. During Jesus' earthly ministry, these were relatively small towns, and all Jewish men were obligated to attend certain festivals in Jerusalem (Deuteronomy 16:16). This meant Jesus had been known, for years, by some of the people of the region prior to the start of His public ministry. This familiarity turns out to be another roadblock to the people's faith.When Jesus began to contradict the people's traditional attitudes, they demanded a miracle from Him as proof (John 6:30). This was mere hours after Jesus had performed a very public miracle; such a request was fundamentally dishonest. The people had already seen more than enough (Matthew 12:39). Here, as Jesus continues to offend with His teaching, people begin to dismiss Him as just another common man.
Claiming to have "come down from heaven" confused those who misunderstood His meaning. Some rabbinic traditions held that the Messiah would virtually appear out of nowhere (John 7:27–28), so the idea that a thirty-year-old peasant from a small village could be the Promised One seemed absurd (John 1:46).