Galatians 4: 4 - 7
4 But when the time had fully come, God sent forth his Son, born of woman, born under the law,
5 to redeem those who were under the law, so that we might receive adoption as sons.
6 And because you are sons, God has sent the Spirit of his Son into our hearts, crying, "Abba! Father!"
7 So through God you are no longer a slave but a son, and if a son then an heir.

EWTN