Quoted By:
For we have not followed cunningly devised fables, when we made known unto you the power and coming of our Lord Jesus Christ, but were eyewitnesses of his majesty.
(2 Peter 1:16 KJV)
He was there. Physically and tells us so.
Also we have the Ossuary of Jesus brother James that says clearly in Aramaic.
Ya'akov bar Yosef akhui di Yahshua" ("James, son of Joseph, brother of Jesus")