Genesis 27:41 - Clarke's commentary and critical notes on the Bible

And Esau hated Jacob because of the blessing wherewith his father blessed him: and Esau said in his heart, The days of mourning for my father are at hand; then will I slay my brother Jacob. The days of mourning for my father are at hand - Such was the state of Isaac's health at that time, though he lived more than forty years afterwards, that his death was expected by all; and Esau thought that would be a favorable time for him to avenge himself on his brother Jacob, as, according to the custom of the times, the sons were always present at the burial of the father. Ishmael came from his own country to assist Isaac to bury Abraham; and both Jacob and Esau assisted in burying their father Isaac, but the enmity between them had happily subsided long before that time.