He did not aim to leave behind Him a group of individuals working well together, for even sinners do this: they cooperate with sinners (cf. Matthew 5:47). He came to give us rebirth and to bring a new unity, one which is trinitarian; to bring a peace which passes all understanding, His own: "My peace I give to you, not as the world gives do I give to you" (John 14:27).
…He came to give Himself, to distribute His flesh: "Take, eat My Body which is broken." He came to give His Spirit: "Receive the Holy Spirit" (John 20:22). So He created the little flock of the twelve, the Church. He brought to the world the dynamic force and health of the Trinity, the leaven of the Kingdom which will leaven the three measures which represent the whole of creation (cf. Luke 13:21).
What the world needs is the trinitarian flock, regardless of whether it is small or large. Its greatness is to be found in its trinitarian nature. What man thirsts for is eternity, "even a little part of eternity"; and this is what we have here. To have the character of the Trinity is to be eternal. "This is eternal life, that they know Thee the only true God, and Jesus Christ whom Thou hast sent" (John 17:3).
— Archimandrite Vasileios