God guaranteed his promise by changing Abram’s name. Abram means “exalted father.” This referred to his father Terah and his noble lineage (11:27). His new name, Abraham (Hebrew ’ab hamon), means "father of a multitude." This was a wordplay on the promise of his countless descendants (see also John 8:31–59; Romans 4:16–17; Galatians 3:7, 15–19, 29). Whenever the new name was used, he and his household would remember that a multitude of nations would come from him.