Curseth — This is not here meant of every perverse expression, but of bitter reproaches or imprecations. His blood shall be upon him — He is guilty of his own death: he deserves to die for so unnatural a crime.
Related Commentaries of Leviticus 20:9
Leviticus 20:9
9 For every one that curseth his father or his mother shall be surely put to death: he hath cursed his father or his mother; his blood shall be upon him.