Ishmael, though banished from his father's house, lived in a place not very far from him; and as no doubt he received many favours from his father after his departure, which is implied here, Genesis 25:6, though it be not mentioned elsewhere; so it is probable that he had a true respect and affection to his father, which he here expresseth.
Related Commentaries of Genesis 25:9
Genesis 25:9
9 And his sons Isaac and Ishmael buried him in the cave of Machpelah, in the field of Ephron the son of Zohar the Hittite, which is before Mamre;