5. Things that are distinct in their natures do not combine into one system, unless they be bound up in one by one directing control (ab uno ordinante). But in the universe there are things, having distinct and contrary natures, which nevertheless all combine in one system, some things taking up the activities of other things, some things being aided or even wrought by others. There must then be one ordainer and governor of the universe.
8. Every agent that intends an end cares more for that which is nearer to the last end. But the last end of the divine will is the divine goodness, and the nearest thing to that in creation is the goodness of the order of the entire universe, that being the end to which every particular good of this or that thing is referred, as the less perfect is referred to the more perfect, and every part is for its whole. What therefore God most cares for in creation is the order of the universe:* He is therefore its controller.
Hence Holy Scripture ascribes the course of events to the divine command: Who giveth command to the sun, and it riseth not, and encloseth the stars as under a seal (Job ix, 7): He hath given a command, and it shall not pass away (Ps. cxlviii, 6).
3.63 : How in that Final Happiness every Desire of Man is fulfilled
3.65 : That God preserves things in Being