In contemporary discussions it is often assumed that God cannot be timeless if presentism is true, but that God can be timeless if four-dimensional eternalism is true. I argue that the Christian God cannot be timeless on either ontology of time. Contemporary atemporalists have not fully grasped the details of eternalism, nor fleshed out the implications of eternalism for understanding the Christian doctrines of creation, conservation, and incarnation. Once the details are developed, it can be shown that eternalism is not compatible with divine timelessness. Instead, the Christian God would be temporal as understood on eternalism. In order to demonstrate this, I shall do the following in this thesis. In chapter 1 I shall lay out the ...