Update: A few more ideas came to me about our dear Lord Commander Snow in perusing other and greater theorists.
I am almost 100% certain that someone else has thought about this. The signs are far too obvious (at least to me), but Jon Snow is clearly a Jesus parallel. ***Spoilers after the picture if you haven’t read the 5th Book A Dance With Dragons***
So many theories (and this video) point to him being Azor Ahai/the prince that was promised aka the savior who must be reborn to save the world. Jon is stabbed in the back by his brothers, which is yet another Christ reference. This could be a meta-fulfilling of the prophecy, since Jon prior to death could’ve been Azor Ahai reborn as Jon Snow, but being killed as that could afford him the ability to be reborn (again) as the legendary savior, if that makes any sense. Pretty much Azor Ahai was reborn as Jon, but Jon had to die to be reborn as Azor Ahai. He was also betrayed by his own brothers as Christ was betrayed by his disciple. There is trite saying about keeping your friends close and your enemies closer, but when you don’t know which is the other, what distance shall you use?