P3Ch18e The Instrumental Cause

Part 3 Metaphysics Chapter 18 Being and Causality Section e. The Instrumental Cause The instrumental cause is that which does not act only by virtue of its form, but by the virtue of the fact that it is moved by the principal agent. This  begins the discussion of instruments made use of by man, and the metaphysical possibility of God making use of people in a similarly instrumental manner.