Galatians 4:5-7

4:5 to redeem those who were under the law, so that we may be adopted as sons with full rights. 4:6 And because you are sons, God sent the Spirit of his Son into our hearts, who calls “Abba! Father!” 4:7 So you are no longer a slave but a son, and if you are a son, then you are also an heir through God.