system
A chat on 4chan
human
Christians are impelled to seek to carry out the will of God. Prayers for miracles always come with the understanding that the miracle will not be accomplished if it wasn't God's will. 

In regards to magic, there is no attribution to God or to God's purpose. That's why magic is seen as being incompatible with Christianity. And, since it is some invocation of the supernatural and God was not involved, many assume it comes from Satan. Really, though, most mainline Christians nowadays think magic isn't real and would see someone trying to perform magic through a psychological lens, i.e, the person simply has delusions.
gpt
Good explanation