Galatians (Gal) 4:1-7

What I am saying is that as long as the heir is a minor he is no different from a slave, even though he is the legal owner of the estate; rather, he is subject to guardians and caretakers until the time previously set by his father. So it is with us — when we were “children” we were slaves to the elemental spirits of the universe; but when the appointed time arrived, God sent forth his Son. He was born from a woman, born into a culture in which legalistic perversion of the Torah was the norm, so that he might redeem those in subjection to this legalism and thus enable us to be made God’s sons. Now because you are sons, God has sent forth into our hearts the Spirit of his Son, the Spirit who cries out, “Abba!” (that is, “Dear Father!”). So through God you are no longer a slave but a son, and if you are a son you are also an heir.