Cosma e Damiano in Rome, or at Ravenna (right). Images of the Good Shepherd often include a sheep on his shoulders, as in the Lukan version of the Parable of the Lost Sheep. Interpretation According to German theologian Friedrich Justus Knecht a number of doctrines are put forward in this parable. 1) The Sacrifice and Death of our Lord Jesus Christ. As Jesus "distinctly foretells His Sacrifice and Death in the words: 'I lay down My life for My sheep.'" 2) The one, united, catholic Church. As Jesus "foretold that the Gentiles also would believe in Him, and that all the faithful, both Jews and Gentiles, would be united in one fold, under one Shepherd." 3) The Love of Jesus for sinners. "The touching parable of the lost sheep shows our Lord’s compassionate love for individual sinners. The lost sheep signifies a sinner who, obeying his own evil inclinations and the allurements of sin, has separated himself from Jesus, and is shut out from the number of the faithful. But the Saviour does not withdraw His love from this wanderer. Even as, during His sojourn on earth, He laboured for the conversion of sinners, so does He now go after the sinner. He calls him by His grace, by His priests, and invites him to return once more to the fold, by means of the Sacrament of Penance." Roger Baxter in his Meditations sees Jesus, the good shepherd, as a fulfillment of a number of Old Testament passages, writing: "This divine shepherd will visit you to-day, to feed you, and to defend you from the wolves of hell. There is no part of a shepherd's duty which He does not perform most willingly. Hence He says by His prophet, 'Behold, I Myself will seek My sheep: and will visit them as the shepherd visits his flock: I will feed them in the most fruitful pastures; I will seek that which was lost, and that which was driven away I will bring again: and I will bind up that which was broken; and I will strengthen that which is weak, and that which is fat and strong I will preserve, and I will feed them in judgment.' (Ezech. 34:11)" He also connects Jesus with Psalm 22:1, "The Lord rules me, and I shall want nothing; He has set me in a place of pasture." and Isaiah 53:7 "He shall be led