Catechism of the Catholic Church

"But when the time had fully come, God sent forth his Son, born of a woman, born under the law, to redeem those who were under the law, so that we might receive adoption as sons." This is "the gospel of Jesus Christ, the Son of God": God has visited his people. He has fulfilled the promise he made to Abraham and his descendants. He acted far beyond all expectation-he has sent his own "beloved Son." (389, 2763)