When the completion of time came. God sent his Son, born of a woman, born a subject of the Law; to redeem the subjects of the Law, so that could receive adoptions as sons. As you are sons, God has sent into our hearts the Spirit of his Son crying ‘Abba Father’, and so you are no longer a slave, but a son; and if a on, then a heir, by God’s on act (Gal 4:4-7).