Cary Grant once told how he was walking along a street and met a fellow whose eyes locked onto him with excitement. The man said, "Wait a minute, you're … you're–I know who you are; don't tell me–uh, Rock Hud–No, you're …" Grant thought he'd help him, so he finished the man's sentence: "Cary Grant." And the fellow said, "No, that's not it! You're …" There was Cary Grant indentifying himself with his own name, but the fellow had someone else in mind.
John says of Jesus, "He was in the world, and though the world was made through him, the world did not recognize him" (John 1:10 NIV). And even when Jesus identified who he was–the Son of God–the response was not a welcome recognition, but rather the Crucifixion.