For as many as are led by the Spirit of God, they are the sons of God.
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Cyprian of Carthage
AD 258
If we are the sons of God, if we have already begun to be his temples, if (after receiving the Holy Spirit) we live holily and spiritually, if we have lifted up our eyes from the earth toward heaven, if we have raised our hearts, full of God and Christ, to supernal and divine things, let us do nothing which is not worthy of God and Christ, as the apostle arouses and urges us.
They are the sons of God, by this new grace of adoption, by which also they call God, Abba; that is to say, Father, whereas under the former law of Moses, God rather governed his people by fear; they were his servants, we are his sons; and if sons, also the heirs of God, with the promise of an eternal inheritance in his kingdom, provided we suffer for Christ's sake, as he suffered for us. And surely the short sufferings in this world have no proportion, nor can be put in balance with the future endless glory, which is promised and prepared for us in heaven. (Witham)
Abba is a Syriac word, which signifies my father. This is properly the word of free and noble children; for amongst the Hebrews, the children of slaves were not allowed to call their fathers Abba, nor their mothers Imma. This kind of expression was very rarely used under the old law. The Hebrews called the Almighty their Lord, their God, their Salvation, their King, their Protector, their Glory but seldom their father, sca...
Note the great honor here. For as believers we do not merely live in the Spirit; we are led by him as well. The Spirit is meant to have the same power over us as a pilot has over his ship or a charioteer over his horses. And it is not only the body but the soul also which is meant to be controlled in this way. If you put your confidence in baptism to the point that you neglect your behavior after it, Paul says that, even if you are baptized, if you are not led by the Spirit afterward you will lose the dignity bestowed on you and the honor of your adoption. This is why he does not talk about those who received the Spirit in the past but rather about those who are being led by the Spirit now.
Since the Lord prepares the will, he also touches the hearts of his children with fatherly inspirations so that they might do good…. Consequently, we do not think that our free will is lacking, nor do we doubt that, in each and every movement of man’s free will, his help is the stronger force.
After stating that through the Holy Spirit will be given to us the life of glory, which will exclude all mortality from our bodies [n. 628], the Apostle now proves this: first, he shows that this glorious life is given by the Holy Spirit; secondly, why it is deferred [v. 17b; n. 650]. In regard to the first he presents this argument: All who are sons of God obtain the inheritance of a glorious life; but those who are ruled by the Holy Spirit are sons of God. Therefore, all who are ruled by the Holy Spirit obtain the inheritance of a glorious life. First, therefore, he posits the minor of this proof; 316 secondly, the major [v. 17; n. 646]. In regard to the first he does two things; first, he states his proposition; secondly, he proves it [n. 637]. 635. In regard to the first there two things to consider. First, how some are led by the Spirit of God. This can be understood in the following way: All who are led by the Spirit of God, i.e., ruled as by a leader and director, which the Spir...