If he came " to bear witness to the truth" was the co-creator of all, you would think it would be a priority for him to set things straight, leave that kind of a fact- based legacy.
It would have have been a good time to contradict flat-earthers , like satan, and say: I could not possibly see China, India, you know that. ( to have a mental picture, the 2 would not have to climb an usually high mountain", expanding their horizon.