John Chrysostom
"But if your brother is grieved because of food, you are no longer walking according to love." Do you notice how he first tries to draw him to himself, showing that he has such great concern for him that, in order not to grieve him, he does not dare command even what is altogether necessary? Rather, he wishes to draw him by condescension and love. Even after he has dispelled his fear, he does not draw him by force or compel him. Instead, he grants him complete freedom, because turning someone away from the use of food and causing grief are not the same thing. Do you see how much he cares for the preservation of love? He knew that love can correct everything. Therefore he asks something greater from his hearers here. You must not, he says, drive them to extremes.
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But if condescension is required, then even this must not be refused. Therefore he adds: "Do not destroy with your food the one for whom Christ died." Do you really not consider your brother worth enough that, through abstaining from food, you may gain his salvation? Christ did not refuse to become a servant for him and to die. Yet for his salvation you do not agree to give up food? Although Christ knew that He would not benefit all, still He fulfilled His work and died for all. But you know that because of food you destroy him in a more important matter, and despite this you dispute. You consider contemptible the one whom Christ deemed worthy of such great honor, and you dishonor the one whom He loved. Christ died not only for the weak in faith, but also for the enemy. Yet for the weak in faith you do not wish to abstain from food? Christ accomplished the greatest work, and you do not wish to do a small one, although He is Master and you are brother. These words are sufficient to instruct the weak in faith as well. For it is clear that he is fainthearted and, having received great gifts from God, does not sacrifice even a small thing.