Christian atheism asks - What dies at the cross? Not a messenger, not an offspring but God himself. It is the radical reading of Faith in which God entrust's his spirit to the community of believers through his death. God is dead, and we are his spirit resurrected when we act as God in the world.
This is the first video explainer on the topic - We shall explore it further as an epistemology, why I believe nothingness and atheism are at the core of Christianity, and why it was made pagan again by putting maintaining belief in the transcendent guarantee.