The Holy Church, by the power of the Spirit of God dwelling in Her, is what She is. By the power of the Spirit of God, simple people become Christians. By this same power they remain Christians and ascend to the final degrees of Christian perfection.
Then it begins to manifest itself in them openly and tangibly. Thus the essence of Christianity consists in the manifestation of the powers of the Spirit. Their absence exposes the false direction of those who boast in the word of truth.
It also exposes the moral falsity of those who claim true Christian perfection for themselves. Saint Chrysostom touched here on the power of the Spirit insofar as it was manifested in the first planting of the Church on earth.
But elsewhere he reveals with the same persuasiveness the truth that, in the life of Christians, if there is anything essential and valuable, all of it proceeds from the Spirit.
On this point one may reconcile the first opinion with the present one. That is, by power one may understand life, or the working of salvation, and everything essential in the Christian, adding this: insofar as all this is the fruit of the power of the Spirit of God.