For atheists like Dawkins, belief in God is an intellectual mistake, and honest thinkers need simply to recognize this and move on from the silliness and abuses associated with religion.
from Beyond ‘New Atheism’
To deny the Spirit, the Holy Spirit, signifies dullness, obtuseness, of a man's own spirit. The human being consists of body, soul and spirit; in all three there may be a defect. Atheism — denial of the Divine — denotes an actual pathological defect. Failure to find in life that link with the world which enables us to recognise the Christ, is a calamity for the soul. To be unable to find the Spirit in one's own inmost being denotes obtuseness, a kind of spiritual mental deficiency, though in a subtle and unacknowledged form.
After rejecting religion, I was an existentialist for a while, until I realized that Darwinism is impossible, and a religion too. This led me on a search for spiritual truth, or at least something that made sense. There are apparently those for whom only atheism makes sense, and as Steiner stated in the second excerpt above, this is caused by a defect in the soul, which is replaced with every incarnation (the spirit is eternal). Atheism isn't a sin in itself - just sad, although not as sad as belief in some religions, and some atheists are more ethical than some who call themselves Christians.
What I find so hilarious is the amount of effort being put into the development of AI, which will supposedly prove that consciousness could have arisen without a Creator. Consciousness is the closest thing to the spirit that most people know in their lives. It is a spiritual operation, and no computer will ever touch it. They can do some impressive tricks, but that's not consciousness. The brain is just the "receiver" for the higher aspects of the soul.