Galatians 2:18

For if I build again the things which I destroyed, I make myself a transgressor.
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Cornelius a Lapide

AD 1637
For if I build again—if I attribute justifying faith to the law—the things which I destroyed—i.e, the law, as justifying—I make myself a Transgressor. Like a Proteus, I change my faith at every wind. This is a fresh argument. If I do what the Jews falsely allege against me, I shall be a hypocrite, a destroyer in public of what I build again in private. But a hypocrite no one has charged me with being.

John Chrysostom

AD 407
Note the shrewdness of Paul. For they wanted to show that the one who does not keep the law is a transgressor; but he turns the argument upside down, showing that the one who observes the law is a transgressor not against faith but against the law itself. What he says is as follows: “The law has ceased, as we ourselves agree, in so far as we have left it and taken refuge in the salvation of faith. If we now strive to establish it, we become transgressors by this very fact, as we strive to observe the precepts dissolved by God.”

John Chrysostom

AD 407
Observe the Apostle's discernment; his opponents endeavored to show, that he who kept not the Law was a transgressor, but he retorts the argument upon them, and shows that he who did keep the Law was a transgressor, not merely of faith, but of the Law itself. I build up again the things which I destroyed, that is, the Law; he means as follows: the Law has confessedly ceased, and we have abandoned it, and betaken ourselves to the salvation which comes of faith. But if we make a point of setting it up again, we become by that very act transgressors, striving to keep what God has annulled. Next he shows how it has been annulled.

John of Damascus

AD 749
When they say that he who does not keep the law is a transgressor, he says the exact opposite, calling a transgressor the person who keeps the law. It is like saying: The law has ceased, as we confessed, and so, having abandoned it, we have taken refuge with the salvation which is from faith. If, then, we contest about the application of the law, we become transgressor of the same, inasmuch as we contest about keeping what has been dissolved by God.

Tertullian of Carthage

AD 220
Justly, therefore, did he refuse to "build up again (the structure of the law) which he had overthrown.". Judge who is not wont "to rebuild those things which he has destroyed, lest he be held a transgressor."

Knowing this first, that no prophecy of the scripture is of any private interpretation - 2 Peter 1:20

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