There is a religious exemption, don't have to be Christian.
Christianity believes the body is the Temple of the Holy Spirit as such, I would imagine many would consider the jab blasphemous.
Different people have differing views, some may not like that aborted fetal tissue was used in developing the vaccine. As for me, it's more macabre and causes me to vomit that a pre born was sliced and diced to create the vaccine. I cannot fathom floating in my body even the tiniest fetal speck moving around in my body via the vaccine. To me, it's like being a cannibal, I am repulsed by it and my mind cannot accept that.