Substance Dualism is True Only if Classical Theism is False

If substance dualism is true, then minds are immaterial concrete individuals or stuffs. Now no concrete individual or stuff can be created without being created from temporally or ontologically prior things or stuff(s). But classical theism entails that if there are any created minds, then at least one such mind was created without being created from temporally or ontologically prior individuals or stuffs. Therefore, if substance dualism is true, then classical theism is false. 

Ricki Bliss's Cambridge Element on Grounding, Fundamentality, and Ultimate Explanations

 ...is now out , and available for free download for a limited time. Required reading.