The words which Theophilact speaks from or on 2 Cor. 3, concerning the candidates, Paul speaks of believers; and the simile borrowed by the aforementioned writer from the silver, which, when the sun shines upon it, reflects his rays, which he applies to the candidates, who become illumined by the Holy Ghost, and reflect a spiritual radiance of virtues, confirms, in a good degree, that he is speaking of such candidates as can be illumined by the Holy Ghost, and live virtuously, to the honor of God, the edification of their neighbor, and to the salvation of their own souls. What he says after that, fully confirms our opinion, namely, that he is speaking of believing candidates; for, this he clearly expresses with these words: “All believers are illumined in baptism by the Holy Ghost.” What he adds finally, tends in the same direction, for he says that, “As we are all dead by one sinner (Adam), even so we are all made alive and are risen, through Christ, in baptism.” Who does not see that this making alive and rising (in baptism) has respect to the renewing of the old life, according to the teaching of Paul (Rom. 6:4): “Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life.” That this is his meaning, he indicates by the following words, when he calls those whom he has previously termed candidates, believers and regenerated persons, saying: “We justly recognize no one as believing, who lives after the flesh; but all who are regenerated (thus he calls the candidates or the baptized) by the Spirit, begin a new, spiritual life.”
_Page 573._ Philophilact on 2 Tim. 1, says: “The Holy Ghost hovers over us at baptism; now, if we keep this Spirit, and do not drive him away by wicked works, he keeps us and what we have received from God; therefore, use all diligence, that you keep the Holy Ghost, and he, who has been given you, will also keep you.”
It seems that in the days of Theophilact there was a failing among some of the candidates, or, at least, among the unbaptized Christians, that, instead of stirring up the grace of the Spirit of God, which had been given them (after baptism), and thereby increasing and proceeding in virtues, they decreased and retrograded, yea, fell into wicked works. This, Theophilact opposed, warning them to be careful not to drive the good Spirit of God away from them by wicked works, seeing he will not dwell in a malicious soul, nor in a body that is subject unto sin. Wisdom of Sol. 1:4.
Secondly, he admonishes them affectionately and consolingly, to keep the gift of the Holy Ghost (after baptism), pointing out also, the means by which this could be done, namely, by avoiding wicked works, and using diligence, that is, such diligence by which the worship of God and the common edification could be promoted. The consolation which he, for such, adds to his admonition, is expressed in these words: “Therefore, use all diligence, that you keep the Holy Ghost, and he ... will also keep you.” But, what fruit his warning, and consoling admonition had on those persons, is not stated there; hence we will take our leave, and proceed to other writings which he has left.
_Same page as above._ Theophilact on John 3, says: “It is not enough for the preservation of purity, to be baptized; but one must also use great diligence, that the image of the sonship of God, which is represented in baptism, is kept unspotted. There are many who have received, in baptism, the grace of adoption as children of God, but who, through negligence, have not remained children of God unto the end.