Someone sees an offender, and displeasure against him proceeds from the heart, with a compulsion to defend the one offended. Someone receives a benefit, and the heart is filled with gratitude toward the benefactor. A thought of God comes, and reverent worship and devotion to Him are felt in the heart, even if one does not have right concepts of the Godhead. Thus every lawful deed appears written in the heart even of a Gentile. But whence is it in the heart? Is the heart the producer of the lawful prompting, or only its conductor? Is it itself the lawful deed, or does it only manifest and indicate the lawful deed, receiving promptings from elsewhere and serving only as their interpreter? Deeper than the heart, in the spirit, lies conscience, enlivened by the fear of God. With its finger it writes in the heart, at every occasion, the lawful deed, namely how one should act. Sometimes it writes: help. Sometimes: defend. Sometimes: do not touch, this belongs to another. And so forth. The lawful deed both appears written in the heart and is witnessed by the feeling that indicates the manner of action. But is this everything? No. One must reach the fulfillment in deed of what has been prompted through the heart. This proceeds as follows. The feeling of the heart is reflected in consciousness. The ray of consciousness again descends upon conscience and calls forth the obligation to act in this or that way. The heart only sympathizes with the lawful deed, as conscience has prompted it. But conscience, when consciousness has turned to it with the deed, now lays upon it the moral necessity of acting thus and not otherwise. This is what it means that their conscience bears witness with them. Bearing witness with, συμμαρτυρούσης, means co-witnessing. With what? With the feelings of the heart. Conscience says to consciousness, or to the person: yes, yes; one must act as the heart prompts. With this the inner laying down of the law for each occasion is completed. The lawful deed has been indicated and recognized as obligatory. But such a decision has been issued only in the innermost higher chamber, where nothing lawful meets obstacles. For this decision to pass into deed, it must pass through the lower chamber: the soul, with its needs, habits, and outward relations accepted as rules. Every lawful deed enters here. As soon as it enters, it always meets a storm of opposing thoughts. Meanwhile conscience defends its own cause. A struggle occurs within, between thoughts accusing or answering one another. Answering, ἀπολογουμένων, means defending, performing the office of an advocate. On one side condemnation is heard, and on the other defense and justification. Whichever side prevails, the fulfillment follows that side. The lawful deed, laid down as law within, is either rejected or fulfilled in action. Who decides? The free person who acts. No one can determine why this person inclines to one side or the other. His decisions cannot in any way be brought under some laws by which one could foresee them. For now he has one decision, and an hour later another, under entirely equal circumstances. This is the whole production of the moral deed. From it one sees that the moral law is written in man's heart and strengthened by conscience. But from this it does not follow that it is always necessarily fulfilled. It meets thoughts, and in struggle with them it does not always emerge victorious. The author of fulfillment or nonfulfillment is the free man, who will give account for his deeds on the day when the Lord judges the secrets of men. For man's decisions toward deeds are made in secret, and they are what properly fall under judgment and condemnation. We consider verses 14 and 15 to be parenthetical explanatory propositions. Yet it should be noted that our ancient interpreters do not think so, but see here also consecutive speech. What compels us to see a parenthesis here is that otherwise the following text, verse 16, will stand awkwardly: "on the day when God judges." But they connect these words with what immediately precedes. And when interpreting, they write out the whole passage thus: "and their thoughts among themselves accusing or else answering on the day when God judges," and so on. The Apostle showed above that at the judgment all will be judged according to the law that lay upon each one. He then explained that the Gentiles too had and have their own law, written in the heart and confirmed by conscience. Now he says how the judgment itself will take place. Namely, witnesses will not be needed there. In his own thoughts each will pronounce justification or condemnation over himself. Each will see his law and his deeds, compare the two, and decide whether he is guilty or not. Saint Chrysostom says: "The Apostle refers the words 'accusing,' and so forth, to the whole human race. For on the day of judgment our own thoughts will stand forth, now accusing, now justifying. At that tribunal a man needs no other accuser." Theophylact and Ambrosiaster say the same. Oecumenius, besides his own thoughts, also cites the interpretation of Blessed Photius. Theodoret explains here how accusing thoughts will arise, with the following examples. "I do not consider it superfluous to explain this word by some example. When the wondrous Joseph put into action his plan concerning Benjamin and tried to take him as a slave, as though he had stolen the cup, thereby testing the disposition of his brothers as by fire, then the power of the witness of conscience was clearly revealed. For then, precisely then, they were less occupied with the present sorrowful event and remembered the crime committed twenty-two years earlier. Some said: the blood of our youngest brother is required from our hands. And Reuben recalled the admonitions he had made. Therefore one must imagine the future judgment also in this way. The conscience of those who lived outside the law will sometimes justify itself, putting forward ignorance as a pretext. At other times it will accept accusation and proclaim the justice of the sentence pronounced." This interpretation does not contradict the preceding one and does not abolish it. It only indicates a second moment of one and the same judgment. One is manifested in this life, and the other comes in the next. But in essence both are the same. There conscience will likewise judge and condemn, as it does here. There only its voice will be stronger and more decisive, because it will not meet contradictions, as happens here.