The eruption of this Jesus-character into time-space is a most unwelcome distraction which must be contained within the operant “laws” of proven science and reason. He is tremendously inconvenient. It is actually impossible to overstate how inconvenient he is. He was even then, two thousand years ago. After all, that is why the powers-that-be of that day took so much trouble to remove him.
Without creating a tiresome list, let it be said that the historical facts are ample to verify that this person, Jesus of Nazareth, really lived and died in the early first century CE in the Roman province of Palestine. Contrary to the egregious and facile declarations of too many even quite well-educated people (I’ve even encountered a Ph.D. or two who have said this kind of thing), there are sufficient sources outside the New Testament, the primary Christian documents about Jesus, to verify his life and death in historical time and place. And it must be pointed out that these “extra-Biblical” sources are, almost without exception, hostile to both Jesus and Christians.