Because Jesus defied the laws of nature?The idea that Jesus performed miracles or resurrected or was a divine being, are all based on the supernatural or magic.
I'm glad to see you're starting to believe in Jesus.
What else do you want to learn?
Just like politicians....They're con-artists who often bilk people out of significant sums of money.
This is where we need to work on you. You think Christianity is based on "magic" becuase you can't comprehend something that happened that defies our human laws of physics...It fits it to a tee.