For reproof and rebuke, as also the original term implies, are the stripes of the soul, chastising sins, preventing death, and leading to self-control those carried away to licentiousness. Thus also Plato, knowing reproof to be the greatest power for reformation, and the most sovereign purification, in accordance with what has been said, observes, “that he who is in the highest degree impure is uninstructed and base, by reason of his being unreproved in those respects in which he who is destined to be truly happy ought to be purest and best.” For if rulers are not a terror to a good work, how shall God, who is by nature good, be a terror to him who sins not? “If thou doest evil, be afraid,”[365] says the apostle. Wherefore the apostle himself also in every case uses stringent language to the churches, after the Lord’s example; and conscious of his own boldness, and of the weakness of his hearers, he says to the Galatians: “Am I your enemy, because I tell you the truth?”[366] Thus also people in health do not require a physician, do not require him as long as they are strong; but those who are ill need his skill. Thus also we who in our lives are ill of shameful lusts and reprehensible excesses, and other inflammatory effects of the passions, need the Saviour. And He administers not only mild, but also stringent medicines. The bitter roots of fear then arrest the eating sores of our sins. Wherefore also fear is salutary, if bitter. Sick, we truly stand in need of the Saviour; having wandered, of one to guide us; blind, of one to lead us to the light; thirsty, “of the fountain of life, of which whosoever partakes, shall no longer thirst;”[367] dead, we need life; sheep, we need a shepherd; we who are children need a tutor, while universal humanity stands in need of Jesus; so that we may not continue intractable and sinners to the end, and thus fall into condemnation, but may be separated from the chaff, and stored up in the paternal garner. “For the fan is in the Lord’s hand, by which the chaff due to the fire is separated from the wheat.”[368] You may learn, if you will, the crowning wisdom of the all-holy Shepherd and Instructor, of the omnipotent and paternal Word, when He figuratively represents Himself as the Shepherd of the sheep. And He is the Tutor of the children. He says therefore by Ezekiel, directing His discourse to the elders, and setting before them a salutary description of His wise solicitude: “And that which is lame I will bind up, and that which is sick I will heal, and that which has wandered I will turn back; and I will feed them on my holy mountain.”[369] Such are the promises of the good Shepherd.