The Instructor 1.12.100

but well tuned. So the Word is also called Savior, since he has found for human beings these rational medicines for good sense and salvation: watching for the right moment, reproving the harm, explaining the causes of the passions, cutting out the roots of irrational desires, commanding what we must abstain from, and bringing all the antidotes of salvation to the sick. For this is the greatest and most royal work of God: to save humanity. The sick are annoyed with a physician who gives them no advice for their health; how then should we not acknowledge the greatest gratitude to the divine Instructor, who does not keep silent nor overlook the disobediences that lead to destruction, but reproves them, checks the impulses that tend toward them, and teaches the precepts proper for right conduct? We must acknowledge the greatest gratitude to him. For what else do we say the rational animal, I mean the human being, must do, but contemplate the divine? And I say that he must also contemplate human nature, and live as the truth directs, greatly admiring both the Instructor himself and his commandments, since they befit and suit each other. After this pattern we too must fit ourselves to the Instructor, making our speech agree with our deeds, and truly live.