Matthew 5:47

"Do not even the Gentiles the same?" And this most especially we may admire in His teaching, that while in each instance He sets down with very great fullness the prizes of the conflicts; such as "to see God," and "to inherit the kingdom of Heaven," and "to become sons of God," and "like God," and "to obtain mercy," and "to be comforted," and "the great reward:" if anywhere He must needs mention things grievous, He doth this in a subdued tone. Thus in the first place, the name of hell He hath set down once only in so many sentences; and in some other instances too, it is with reserve that He corrects the hearer, and as though he were managing His discourse rather in the way of shaming than threatening him; where He saith, "do not even the publicans the same?" and, "if the salt have lost its savor;" and, "he shall be called least in the kingdom of Heaven." And there are places where He puts down the sin itself by way of punishment, leaving to the hearer to infer the grievousness of the punishment: as when He saith, "he hath committed adultery with her in his heart;" and, "he that putteth away causeth her to commit adultery;" and, "That which is more than these is of the evil one." For to them that have understanding, instead of the mention of the punishment, the very greatness of the sin is sufficient for correction. Wherefore also He here brings forward the heathens and the publicans, by the quality of the person putting the disciple to shame. Which Paul too did, saying, "Sorrow not, even as the rest which have no hope;" and, "Even as the Gentiles which know not God." And to signify that He requires nothing very overpowering, but a little more than was accustomed, He saith, "Do not even the Gentiles the same?" Yet nevertheless He stops not the discourse at this, but makes it end with His rewards, and those good hopes.

Ethnici, that is, the Gentiles, for the Greek word ἔθνος is translated 'gens' in Latin; those, that is, who abide such as they were born, to wit, under sin.

(non occ.) But if you only pray for them that are your kinsfolk, what more has your benevolence than that of the unbelieving? Salutation is a kind of prayer.