This of no man involved in the conception is always a tough point to get through LOL
Prophecies is another one.
But I think we all believe these days that a child born in poverty, displaced, prosecuted and with marked different circumstances to others around them, can become a great leader tomorrow. And move masses if their message resonates with them. A message of Peace, fairness and equality. Someone with a pure heart. For me all this sinless, without original sin, immaculate... equals of pure heart, childlike, without any macheavellian thoughts or actions. We are asked to control our anger, greed, envy, lust, amongst other and nurture our understanding and giving nature. Giving without any expectation to receive back.
Will Jesus reach the masses via social media/ TV these days? I think so, but it feels too impersonal. I think writing his own books would be the best option.
Would his followers still be prosecuted and killed for their believes? I think that would not be the case today, at all. At least on secular countries.
I think society has improved much over these centuries past.