And so he seems to be setting them upon a level, but from that he has said, he shows that the difference between them is great. First then by the appellation of “brother” he does away with disputatiousness, and then also by calling that awful day to their mind. For after saying, “Why do you set at nought your brother?” he proceeds, “For we shall all stand before the judgment-seat of Christ.”
And he seems indeed to be again rebuking the more advanced in saying this, but he is putting the mind of the Judaizer to confusion by not only calling for his reverence to the benefit that had been done him, but also making him afraid of the punishment to come. “For we shall all,” he says, “stand before the judgment-seat of Christ.”
<!--<span class="stiki"></span>-->Ver. 11, 12. “For it is written, As I live, says the Lord, every knee shall bow to Me, and every tongue shall confess to God. So then every one of us shall give account of himself to God.”
See how he again puts his mind into confusion, while he seems to be rebuking the other. For he intimates some such thing, as if he had said, How does it affect you? Are you to be punished for him? But this he does not say, but hints at it by putting it in a milder form, and saying, “For we shall all stand before the judgment-seat of Christ:” and, “So then every one of us shall give account of himself to God.” And he introduces the prophet in witness of the subjection of all to Him, yea a subjection extended even to those in the Old Testament, and of all absolutely. For he does not barely say every one shall worship, but “shall confess,” that is, shall given an account of what he has done. Be in anxiety then as seeing the Master of all sitting on his judgment-seat, and do not make schisms and divisions in the Church, by breaking away from grace, and running over to the Law. For the Law also is His. And why say I so of the Law? Even those in the Law and those before the Law are His. And it is not the Law that will demand an account of you, but Christ, of you and of all the human race. See how he has released us from the fear of the Law. Then that he may not seem to be saying this to frighten them for the occasion, but to have come to it in the course he had proposed himself, he again keeps to the same subject, and says,
Ver. 13. “Let us not therefore judge one another any more: but judge this rather, that no man put a stumbling-block or an occasion to fall in his brother's way.”
Source: Homilies on Romans (New Advent)