Ambrosiaster : At that time believers were subject to reproach from others, whether at home or abroad, being pointed out as guilty of treason. Hence the Galatians, who had likewise suffered a great deal, were more perverse than those who had been spared, because they had lost the merit of their suffering by their resubmission to the law. — EPISTLE TO THE Galatians 3.4 Gaius Marius Victorinus : Such a subtle comment requires patience to understand. It both negatively reprimands and positively admonishes. He reprimands them by saying "You have suffered so much in vain." At the same time he admonishes them by saying "you have suffered so much," aware that they withstood many things with fortitude when they received faith. — EPISTLE TO THE Galatians 1.3.4 Gaius Marius Victorinus : Lest he should seem to despair needlessly, he has corrected his own reprimand by saying "if indeed it is in vain." For they could be corrected. If so, what they have suffered will not be without meaning. The meaning they will have will be perseverance in faith, the prize and the confirmation of promises derived from faith in Christ. — EPISTLE TO THE Galatians 1.3.4 Jerome : (Verse 4) You have suffered so much without cause, if indeed without cause. Let us consider the unfortunate Jews, how they live among other nations in such superstition and the labor of observance, saying, do not touch, do not taste, do not handle, and we will prove that what is said is true: You have suffered so much without cause. But the judgment is not immediately applied to them, and there is doubt if indeed without cause, because this is said of those who can turn from the Law to the Gospel. However, this can be understood better in the following way: that the Galatians, believing in the Crucified One, have endured many reproaches from both the Jews and the Gentiles, and have endured considerable persecutions. These persecutions are in vain criticized, if they depart from the grace of Christ, for which they have endured so much. At the same time, there is the hope that whoever labors for the faith of Christ and afterward falls into sin, just as it is said that he suffered the former without cause while sinning, likewise does not lose it if he returns to the original faith and the former zeal. Otherwise: If you think that circumcision should be followed after grace, then all that you have suffered while living without circumcision up until the present time has been in vain. But it seems to me that you have not endured these things without purpose, for I know that the Law is no longer valid after the Gospel. Or at least this way: It would not be a small loss if, by following circumcision, you had lost so much of the previous effort of faith. But now, in addition to this loss, there is also the punishment of transgression, so that you have suffered in the past without cause and will suffer in the future as well. Some people understand it more forcibly as follows: Consider the former freedom of grace and the present burdens of observation in the Law, and you will see how many things you have done in vain: although the fruit of this error is not completely to be despaired of, since you have been led to this by the zeal of God. For ignorance can be forgiven to those who, if they are converted to better things, teach that the knowledge in you has fluctuated, not the zeal. — Commentary on Galatians John Chrysostom : This remark is far more piercing than the former, for the remembrance of their miracles would not be so powerful as the exhibition of their contests and endurance of sufferings for Christ's sake. All that you have endured, says he, these men would strip you of, and would rob you of your crown. Then, lest he should dismay and unnerve, he proceeds not to a formal judgment, but subjoins, "if it be indeed in vain;" if you have but a mind to shake off drowsiness and recover yourselves, he says, it is not in vain. Where then be those who would cut off repentance? Here were men who had received the Spirit, worked miracles, become confessors, encountered a thousand perils and persecutions for Christ's sake, and after so many achievements had fallen from grace; nevertheless he says, if ye have the purpose, ye may recover yourselves. — Homily on Galatians 3 Oecumenius : "you suffered so much in vain." Many had been tempted while struggling for Christ. Therefore he says, "you suffered so much," therefore, "in vain." For if you are circumcised, you have in vain lost those things; then, for fear that he plunge them into despair, he says, "if indeed in vain." For if you wished to be restored, it would not be in vain. — [PHOTIUS] "if indeed in vain," but not without loss. For it is without reason to neither take up nor set down anything. But the one who began in the Spirit, and because of this having fallen into many trials, then being changed, not only suffered without reason what he suffered, but also to his disadvantage, having lost what belonged to him, suffered because of the tribulations for Christ and the temptations. [end of the excerpt by Photius] — — Commentary on Galatians