it isn't I only know because my sister is a witch she calls herself a wiccan
When I used to live up north, I saw in the local paper that a group of Wiccans were going to hold an open discussion time at a college in its student lounge. I went and sat and listened... Others were doing the same.
As I was observing, one male Wiccan who was the main speaker made a big deal at not wanting to be called a warlock for some reason. He then held up a Bible and announced he does not believe "that book..."
Then it happened. He was no longer able to continue to speak...
His group gathered behind him and held hands and bowed their heads as if they were praying.
He could not continue....
They have a power. But, not God's power... And, that night, they knew it.