Jn 10: 1-10
“Amen, amen, I say to you, whoever does not enter a sheepfold through the gate but climbs over elsewhere is a thief and a robber.
But whoever enters through the gate is the shepherd of the sheep.
The gatekeeper opens it for him, and the sheep hear his voice, as he calls his own sheep by name and leads them out.
When he has driven out all his own, he walks ahead of them, and the sheep follow him, because they recognize his voice.
But they will not follow a stranger; they will run away from him, because they do not recognize the voice of strangers.”
Although Jesus used this figure of speech, they did not realize what he was trying to tell them.
So Jesus said again, “Amen, amen, I say to you, I am the gate for the sheep.
All who came [before me] are thieves and robbers, but the sheep did not listen to them.
I am the gate. Whoever enters through me will be saved, and will come in and go out and find pasture.
A thief comes only to steal and slaughter and destroy; I came so that they might have life and have it more abundantly.
The New American Bible
The Catechism of the Catholic Church
764 “This Kingdom shines out before men in the word, in the works and in the presence of Christ.” To welcome Jesus’ word is to welcome “the Kingdom itself.” The seed and beginning of the Kingdom are the “little flock” of those whom Jesus came to gather around him, the flock whose shepherd he is. They form Jesus’ true family. To those whom he thus gathered around him, he taught a new “way of acting” and a prayer of their own.
763 It was the Son’s task to accomplish the Father’s plan of salvation in the fullness of time. Its accomplishment was the reason for his being sent. “The Lord Jesus inaugurated his Church by preaching the Good News, that is, the coming of the Reign of God, promised over the ages in the scriptures.” To fulfill the Father’s will, Christ ushered in the Kingdom of heaven on earth. The Church “is the Reign of Christ already present in mystery.”
765 The Lord Jesus endowed his community with a structure that will remain until the Kingdom is fully achieved. Before all else there is the choice of the Twelve with Peter as their head. Representing the twelve tribes of Israel, they are the foundation stones of the new Jerusalem. The Twelve and the other disciples share in Christ’s mission and his power, but also in his lot. By all his actions, Christ prepares and builds his Church.
766 The Church is born primarily of Christ’s total self-giving for our salvation, anticipated in the institution of the Eucharist and fulfilled on the cross. “The origin and growth of the Church are symbolized by the blood and water which flowed from the open side of the crucified Jesus.” “For it was from the side of Christ as he slept the sleep of death upon the cross that there came forth the ‘wondrous sacrament of the whole Church.'” As Eve was formed from the sleeping Adam’s side, so the Church was born from the pierced heart of Christ hanging dead on the cross.