This Sunday morning, we will be in Genesis 26:33-28:9, the story of Jacob’s deception of Isaac to receive the blessing. One of the elements that Moses seems to be bringing out in these narratives is the spiritual decline of Isaac at this point in his life. He values the taste of delicious food more than faithfulness to the covenant, and so is willing to take action to counter the earlier prophecy God made that Jacob would receive the blessing rather than Esau (cf. Gen 25:23). This leads to a number of interpretive questions for the rest of the passage, which makes for a great story. I intend to bring out the spiritual decline of Isaac on Sunday morning, but I doubt that I will go as far as Alexander Whyte did in this biographical sketch:
The patriarch Isaac presents but a pale appearance as he stands planted between two so stately and so impressive personages as his father Abraham on the one hand, and his son Jacob on the other hand . . . And indeed, as we follow out the sad declension of Isaac’s character to the end, it is forced upon us that it would have been well for Isaac, and for all connected with Isaac, that Abraham’s uplifted hand had not been arrested by the angel of the Lord.
From Bible Characters: Adam to Achan quoted in Bruce Waltke, Genesis: A Commentary (Grand Rapids, Eerdmans, 2001), 374.