He that toucheth - He who injures Isaac or defiles Rebekah shall certainly die for it. Death was the punishment for adultery among the Canaanites, Philistines, and Hebrews. See Genesis 38:24.

And Abimelech charged all his people,.... All his subjects throughout his kingdom, and particularly the inhabitants of Gerar, and more especially his courtiers and servants about him:

saying, he that toucheth this man or his wife; that does any injury to one either by words or deeds, or behaves immodestly to the other, or attempts to ravish her; this being sometimes used as a modest expression carnal knowledge of a woman; or that does either of them any harm or hurt in any respect whatever:

shall surely be put to death; this severe edict he published, in order to deter his subjects from using them ill, to which they might be provoked by Isaac's dissimulation, and by his evil suspicions of them.

And Abimelech charged all his people, saying, He that toucheth this man or his wife shall surely be put to death.

26:6-11 There is nothing in Isaac's denial of his wife to be imitated, nor even excused. The temptation of Isaac is the same as that which overcame his father, and that in two instances. This rendered his conduct the greater sin. The falls of those who are gone before us are so many rocks on which others have split; and the recording of them is like placing buoys to save future mariners. This Abimelech was not the same that lived in Abraham's days, but both acted rightly. The sins of professors shame them before those that are not themselves religious.