“Paul was baptized and illumined by the light of truth, and in this way became a great man; as time when on, he became a much greater one. For after he had contributed his fair share – his zeal, his ardor, his noble spirit, his seething desire, his scorn for the things of this world – there flowed into him an abundance of the gifts that come from God’s grace.
Imitate him, I beg you; and you will be able to be called newly baptized not only for two, three, ten or twenty days, but you will be able to deserve this greeting after ten, twenty, or thirty years have passed and, to tell the truth, through your whole life. If we shall be eager to make brighter by good deeds the light within us – I mean the grace of the Spirit – so that it is never quenched, we shall enjoy the title of newly baptized for all time.”
(St. John Chrysostom, Ancient Christian Writers: Baptismal Instructions, pp. 88-89)