Genesis 27:4

LXX2012⁽ⁱ⁾ ⁴ and make me meats, as I like them, and bring them to me that I may eat, that my soul may bless you, before I die.

Online Parallel Study Bible

that I may eat.The blessing, says Dr. A. Clarke, which Isaac was to confer on his son, was a species of divine right, and must be communicated with appropriate ceremonies. As eating and drinking were used among the Asiatics on almost all religious occasions, and especially in making and confirming covenants, it is reasonable to suppose, that something of this kind was essentially necessary on this occasion; and that Isaac could not convey the right, till he had eaten of the meat provided for the purpose by him who was to receive the blessing.
that my.
Genesis 27:7; Genesis 27:23; Genesis 27:25; Genesis 27:27; Genesis 14:19; Genesis 24:60; Genesis 28:3; Genesis 48:9; Genesis 48:15-20; Genesis 49:28; Leviticus 9:22; Leviticus 9:23
Deuteronomy 33:1-29; Joshua 14:13; Joshua 22:6; Luke 2:34; Luke 24:51; Hebrews 11:20