God, Extension, Divisibility

Descartes writes in the Third Meditation, "The unity, simplicity, or the inseparability of all things which are in God is one of the principle perfections which I conceive to be in him", and in Principle XXIII, "Since divisibility is included in local extension, and divisibility indicates imperfection, it is certain that God is not body."  So, plainly, his concept of 'extension' is significant insofar as it connotes 'divisibility', as part of a Theological doctrine that entails the superiority of Unity over Multiplicity.  However, he seems unaware of two distinctions between the gerund 'extension' and the participle 'extension': 1. The former presupposes the latter; and 2. The former, as inert and unoriented, is divisible in a way that the latter, as an ordered continuous process, is not.  Clearly his concept is the derivative gerund version, reflecting Theological exigency, rather than Philosophical insight into the process of Extending that first produces what the term connotes to him.  In contrast, possible implications of such an insight are manifest in Spinoza's system, in which dynamic Extension is not antithetical to God, but, to the contrary, a divine attribute.