Matthew Henry on Genesis 27:1-5
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. Isaac, being now old, and not knowing, or not understanding, or not duly considering, the divine oracle concerning his two sons, that the elder should serve the younger, resolves to entail all the honour and power that were wrapped up in the promise upon Esau his eldest son. In this he was governed more by natural affection, and the common method of settlements, than he ought to have been, if he know (as it is prob…
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I know not the day of my death - From his present weakness he had reason to suppose that his death could not be at any great distance, and therefore would leave no act undone which he believed it his duty to perform. He who lives not in reference to eternity, lives not at all.
John Gill on Genesis 27:2
And he said, behold, now I am old,.... See Gill on Genesis 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.
John Calvin on Genesis 27:2-3
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. Moreover, the declaration that he knew not the day of his death, is as much as if he had said, that death was every moment pressing so closely upon him, a decrepit and failing man, that he dared not promise himself any longer life. Just as a woman with child when the time of parturition draws near, might say, that she had now no day certain. Every one, even in the full vigor of age, carries with him a thousand deaths. Death claims as its own the foetus in the mother's womb,…