That christianity borrowed from other pagan religions? That the “savior light of the word” and “godman” is not unique to christianity. Other gods have very similar stories to that of Jesus like Horus from Egypt or the hindu god Krishna. I think that God revealed a little of himself to those pagan nations as well since God wants the whole world to know him.
I came across your question again. And I am going to answer for the 2nd time.
Christmas was a feast to the Sum but transformed into our Light, Jesus Christ.
Of course, the creation of the Earth, the Deluge and amny episodes of the Bilce are common to many religions but when they are ours, they are transformed.
Of course, all nations are saved through Christ, they belong to Christ.
Christ saved everybody, not only the RCC. So, in various degrees, they are the Church of Christ. They do not know Christ but we do not know him very well either.
Theorugh their god, they will go to Christ.
Jesus said: you gave me food, you gave me dringk, you gave me shelter. and eveybody will shout, when was it that we did not recognize You, and He will say, when you gave to my little ones, you gave to me.So, non-Christians meet Christ everyday.