Moses
Genesis 27:33BSB·traditional attribution

Isaac began to tremble violently and said, “Who was it, then, who hunted the game and brought it to me? Before you came in, I ate it all and blessed him—and indeed, he will be blessed!”

John Calvin Reformed @genevareformer

33. And Isaac trembled very exceedingly The original is very forcible, and cannot be fully expressed in a translation. “Isaac trembled with a great trembling exceedingly.” The Septuagint represents him as in an ecstasy of astonishment. — Ed. Here now again the faith which had been smothered in the breast of the holy man shines forth and emits fresh sparks; for there is no doubt...

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The covenant-blessing denied to Esau. He that made so light of the birthright would now have inherited the blessing, but he was rejected, and found no place of repentance in his father, though he sought it carefully with tears, Heb 12:17. Observe, 1. How carefully he sought it.

Commenting on Genesis 27:30-40

John Gill Reformed Baptist @doctorgill

And Isaac trembled very exceedingly,.... Or "trembled with a great trembling exceedingly" (b); he was amazed, and astonished, and seized with a trembling all over his body, and with terror and confusion of mind; at the craft of Jacob in getting the blessing; at the disappointment of Esau in losing it; at his own act in blessing Jacob instead of Esau, contrary to his inclination...