Matthew Poole and continuators on Hebrews 12:17

17 For ye know how that afterward when he would have inherited the blessing, he was rejected: for he found no place of repentance, though he sought it carefully with tears.

As Esau's Sin was, such was his Penalty; for they knew, and were well acquainted with this in Moses's History of him, That after he had despised his Birth-right, and sold it, being at Man's Estate, Gen. 27. and was desirous to inherit that Blessing, he was rejected by his Father, as well as by God, and could not obtain it, being unalterably setled on Iacob by both.

He found no place of Repentance, as to the giving it, with God who gave it, and would not alter it, Rom. 11.29. nor with his Father, who did not repent of giving it to Iacob, but confirmed it, Gen. 27.33, 40. and 28.1, 3, 4. And this, altho he sought the Blessing from his Father with Cries and Tears, Gen. 27.34, 38. How therefore should these Hebrews, knowing all this, root out such a Root springing up in themselves, or others, that they might not be guilty of such Sin, lest having despised God's Blessing for their own Ease, Honours, or Profits in this World, when they may desire to seek with Tears the Blessing of the eternal Inheritance from God, and he should irreversibly reject them. See Matth. 7.22, 23.

Marginal references: Or, way to change his mind.