Romans 14:16

By their "good," he means here either their faith, or the hope of rewards hereafter, or the perfectness of their religious state. For it is not only that you fail to profit your brother, he means, but the doctrine itself, and the grace of God, and His gift, you cause to be evil spoken of. Now when thou fightest, when thou quarrellest, when thou art vexatious, when thou makest schism in the Church, and reproachest thy brother, and art distant with him, those that are without will speak evil of you. And so good is so far from coming of this, that just the opposite is the case. For your good is charity, love of the brotherhood, being united, being bound together, living at peace, living in gentleness. He again, to put an end to his fears and the other's disputatiousness, says, "For the kingdom of God is not meat and drink." Is it by these, he means, that we are to be approved? As he says in another passage too, "Neither if we eat are we the better, neither if we eat not are we the worse." And he does not need any proof, but is content with stating it. And what he says is this, If thou eatest, does this lead thee to the Kingdom? And this was why, by way of satirizing them as mightily pleased with themselves herein, he said, not "meat" only, but "drink." What then are the things that do bring us here? "Righteousness, and peace, and joy," and a virtuous life, and peace with our brethren (whereto this quarrelsomeness is opposed), the joy from unanimity, which this rebuking puts an end to. But this he said not to one party only, but to both of them, it being a fit season for saying it to both. Then as he had mentioned peace and joy, but there is a peace and joy over bad actions also, he adds, "in the Holy Ghost." Since he that ruins his brother, hath at once subverted peace, and wronged joy, more grievously than he that plunders money. And what is worse is, that Another saved him, and thou wrongest and ruinest him. Since then eating, and the supposed perfect state, does not bring in these virtues, but the things subversive of them it does bring in, how can it be else than right to make light of little things, in order to give firmness to great ones? Then since this rebuking took place in some degree out of vanity, ...