Genesis 27:4, Make me savory food. Sometimes when a person is of extreme age and is, to one degree or another, physically incapacitated from performing the functions of a normal life that produce pleasure and fulfillment, eating becomes the high point of their daily life because of the pleasure it brings.
Perhaps this was the case with Isaac.
As such, the simple act of the consumption of food can even overshadow even one’s spiritual walk.
An older person must guard against this and maintain their spiritual relationship with Elohim to the very end as best they can.