That he would grant you, according to the riches of his glory, to be strengthened with might by his Spirit in the inner man;
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Gaius Marius Victorinus
AD 400
What are these “riches of the glory of God?” They are “being strengthened with might through his Spirit,” so that they may be strong against the sinful nature, the desires of the flesh and the dreadful powers of this world. This strengthening happens through the Spirit of God. But how are persons strengthened and made firm through the Spirit of God? By “Christ’s dwelling in the inner man,” he says. For when Christ begins to dwell in the inner citadel of the soul, persons are made strong by might through the Spirit. In this way everything of a hostile nature is evicted. –.
Mark with what insatiable earnestness he invokes these blessings upon them, that they may not be tossed about. But how shall this be effected? By the Holy Spirit in your inward man, that Christ may dwell in your hearts through faith. How again shall this be?