John Chrysostom

For since he had given his own advice, and had also urged the example of Christ, he added the testimony of the Scriptures also, to show that with the Scripture Himself giveth patience also. And this is why he said, "Now the God of patience and consolation grant you to be like-minded one towards another, according to Christ Jesus." For this is what love would do, be minded toward another even as toward himself. …

Homily on Romans 27 ↗

Theophylact of Ohrid

He shows that along with the Scriptures, God gives us patience and consolation. Therefore he also calls Him the God of patience and consolation, as the giver and author of these good things. He also asks of Him that He would grant us "to be like-minded one toward another." For it is characteristic of love to think the same about one's neighbor as one thinks about oneself. But since there is a worldly love, he added: "according to the teaching of Jesus Christ," that is, think that which is pleasing to Jesus Christ.

Commentary on Romans ↗

Thomas Aquinas

Then when he says, now may the God of patience, because it seemed exceedingly difficult for a mere man to be able to imitate the example of Christ, as it says in Ecclesiastes: what is man that he should be able to follow the king, his maker? (Eccl 2:12), he makes use of a prayer, saying: now may the God of patience, i.e., the giver: you are my patience (Ps 71:5), and of comfort, i.e., who bestows spiritual consolation: the Father of mercies and God of all comfort (2 Cor 1:3), grant you, from whom is every best gift (Jas 1:17), that …

Commentary on Romans ↗