Galatians 4:4-7  NAS

But when the fullness of the time came, God sent forth His Son, born of a woman, born under the Law, so that He might redeem those who were under the Law, that we might receive the adoption as sons.  Because you are sons, God has sent forth the Spirit of His Son into our hearts, crying, "Abba!  Father!"  Therefore you are no longer a slave, but son; and if a son, then an heir through God.