Leviticus 20:9

MLV⁽ⁱ⁾ ⁹ For he who curses his father or his mother will surely be put to death. He has cursed his father or his mother; his blood will be upon him.

Online Parallel Study Bible

curseth.The term {yekallel} signifies not only to curse, but to speak contemptuously, disrespectfully, or to make light of a person: so that all speeches which have a tendency to lessen our parents in the eyes of others, or to render their judgment, piety, etc., suspected or contemptible, is here included; though the act of cursing, or of treating the parent with injurious or opprobrious language, is what is particularly intended. He who conscientiously keeps the fifth commandment, can be in no danger of the judgment here denounced.
Exodus 21:17; Deuteronomy 27:16; Proverbs 20:20; Proverbs 30:11; Proverbs 30:17; Matthew 15:4; Mark 7:10
his blood.
Leviticus 20:11-13; Leviticus 20:16; Leviticus 20:27; Joshua 2:19; Judges 9:24; 2 Samuel 1:16; 1 Kings 2:32; Matthew 27:25