He said, “Behold, I am old; I do not know the day of my death.
2. Behold, now I am old, I know not the day of my death. There is not the least doubt that Isaac implored daily blessings on his sons all his life: this, therefore, appears to have been an extraordinary kind of benediction.
Here is, I. Isaac's design to make his will, and to declare Esau his heir. The promise of the Messiah and the land of Canaan was a great trust, first committed to Abraham, inclusive and typical of spiritual and eternal blessings; this, by divine direction, he transmitted to Isaac.
Commenting on Genesis 27:1-5
And he said, behold, now I am old,.... See Gill on Gen 27:1, I know not the day of my death; how soon it will be; everyone knows he must die, but the day and hour he knows not, neither young nor old; and though young men may promise themselves many days and years, an old man cannot, but must or should live in the constant expectation of death.