ייִדישער מחשבֿה אויף משלי 27:10

More on this matter: it is evident that for a person who was the friend of our fathers and our forefathers, we are obligated to recall this love by honoring him and treating him with love, as the wise man said: "Your own friend, and your father's friend, forsake not" (Mishlei 27:10). And the Creator reminds us of the bris (covenant) of our forefathers and His providence over us due to them, and in order to fulfill His covenant with them, as written: "But because of the L-ord's love for you, and because He keeps the oath He swore to your forefathers" (Devarim 7:8), and many more like this.