The Fourth Sunday of Easter is known as “Good Shepherd Sunday” because the Mass reading is taken from the Gospel of John, where Jesus uses the imagery of a shepherd guiding and guarding his flock to describe His relationship with those He has redeemed: “I am the good shepherd. The good shepherd lays down his life for the sheep” (Jn. 10:11). The communion antiphon for this Mass reads, "The Good Shepherd is risen! He who laid down his life for his sheep, who died for his flock, he is risen, alleluia." Good Shepherd Sunday is also recognized as the World Day of Prayer for Vocations, where the faithful pray that God will send them good and holy priests who, following the example of Christ, will lay down their lives for His sheep.