Or HaChaim on Genesis 25:26/אור החיים על בראשית כ״ה:כ״ו

1 ויקרא שמו יעקב. He called his name Jacob. The Torah refers to G'd, not to Isaac. Proof is that had Isaac been the subject in our verse, the Torah would not have continued : "and Isaac was sixty years, etc," but would have written: "and he was sixty years, etc."