Whether we ought to love more those who are connected with us by ties of blood?

Objections

Objection 1 : It would seem that we ought not to love more those who are more closely united to us by ties of blood. For it is written (Prov. 18:24): "A man amiable in society, shall be more friendly than a brother." Again, Valerius Maximus says (Fact. et Dict. Memor. iv 7): "The ties of friendship are most strong and in no way yield to the ties of blood." Moreover it is quite certain and undeniable, that as to the latter, the lot of birth is fortuitous, whereas we contract the former by an untrammelled will, and a solid pledge. Therefore we ought not to love more than others those who are united to us by ties of blood.
Objection 2 : Further, Ambrose says (De Officiis i, 7): "I love not less you whom I have begotten in the Gospel, than if I had begotten you in wedlock, for nature is no more eager to love than grace." Surely we ought to love those whom we expect to be with us for ever more than those who will be with us only in this world. Therefore we should not love our kindred more than those who are otherwise connected with us.
Objection 3 : Further, "Love is proved by deeds," as Gregory states (Hom. in Evang. xxx). Now we are bound to do acts of love to others than our kindred: thus in the army a man must obey his officer rather than his father. Therefore we are not bound to love our kindred most of all.