Catechism of the Catholic Church
606 The Son of God, who came down "from heaven, not to do [his] own will, but the will of him who sent [him]", 413 said on coming into the world, "Lo, I have come to do your will, O God." "And by that will we have been sanctified through the offering of the body of Jesus Christ once for all." 414 From the first moment of his Incarnation the Son embraces the Father's plan of divine salvation in his redemptive mission: "My food is to do the will of him who sent me, and to accomplish his work." 415 The sacrifice of Jesus "for the sins of the whole world" 416 expresses his loving communion with the Father. "The Father loves me, because I lay down my life", said the Lord, "[for] I do as the Father has commanded me, so that the world may know that I love the Father." 417
607 The desire to embrace his Father's plan of redeeming love inspired Jesus' whole life, 418 for his redemptive passion was the very reason for his Incarnation. And so he asked, "And what shall I say? 'Father, save me from this hour'? No, for this purpose I have come to this hour." 419 And again, "Shall I not drink the cup which the Father has given me?" 420 From the cross, just before "It is finished", he said, "I thirst." 421
English Translation of the Cathechism of the Catholic Church for the United States of America © 1997, United States Catholic Conference, Inc.