For if you live after the flesh, you shall die: but if you through the Spirit do put to death the deeds of the body, you shall live.
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Ambrose of Milan
AD 397
It is not strange that one who puts to death the deeds of the flesh will live, since one who has the Spirit of God becomes a son of God. It is for this reason that he is a son of God, so that he may receive not the spirit of slavery but the spirit of the adoption of sons, inasmuch as the Holy Spirit bears witness with our spirit that we are sons of God.