Augustine of Hippo
As children of the heavenly Jerusalem (cf. Gal. 4:26), we must recognize that certain blessings are designated for the estranged, while others are reserved for the true heirs (cf. Gen. 25:6). It is to these heirs that reference is made: For you did not receive a spirit of enslavement that leads to fear, but you have received the Spirit of sonship, through whom we cry, ‘Abba, Father!’ (Rom. 8:15).