It is my understanding that the decree of predestination is twofold: election and reprobation as two aspects of the one decree. I'm reading Zanchius' The Doctrine of Absolute Predestination, and he explains more or less predestination in the same way as I've outlined above. But immediately he mentions somewhere "the sovereign decree of preterition." Now I've never read about such a decree anywhere else before. I looked it up quickly it means "non-election." If reprobation is an aspect of the decree of predestination, what then is preterition? How shall it be understood? Thank you for your replies.