Leviticus 20:9

For everyone that curseth his father or his mother
Here begins the account of the penalties annexed to the several laws in the preceding chapter; and that respecting the fear and honour of parents being the first, ( Leviticus 19:3 ) , is here begun with:

shall surely be put to death;
the Targum of Jonathan adds,

``by casting of stones,''

stoning being the punishment of such transgressors:

he hath cursed his father or his mother:
to do either is his sin, and a capital crime it is:

his blood [shall be] upon him:
he shall be guilty of death, be condemned unto it, and punished with it, namely, by stoning; for, as Jarchi observes, wherever it is, "his blood [shall be] on him", or "their blood shall be on them", it is to be understood of stoning.