And Isaac was forty years old — Not much is related concerning Isaac, but what had reference to his father, while he lived, and to his sons afterward; for Isaac seems not to have been a man of action, nor much tried, but to have spent his day, in quietness and silence.
Related Commentaries of Genesis 25:20
Genesis 25:20
20 And Isaac was forty years old when he took Rebekah to wife, the daughter of Bethuel the Syrian of Padanaram, the sister to Laban the Syrian.