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. 
The Brenton translation of the Septuagint is in the public domain.