That God is the Cause of Activity in all Active Agents

AS God not only gave being to things when they first began to be, but also causes being in them so long as they exist (Chap. LXV); so He did not once for all furnish them with active powers, but continually causes those powers in them, so that, if the divine influx were to cease, all activity would cease.

Hence it is said: Thou hast wrought all our works in us, O Lord (Isa. xxvi, 12). And for this reason frequently in the Scriptures the effects of nature are put down to the working of God, because He it is that works in every agent, physical or voluntary: e.g., Hast thou not drawn me out like milk, and curdled me like cheese? with skin and flesh thou hast clothed me, with bones and sinews thou hast put me together (Job x, 10, 11).

3.66 : That nothing gives Being except in so much as it acts in the Power of God
3.68 : That God is everywhere and in all things