וּמַכֵּ֥ה אָבִ֛יו וְאִמּ֖וֹ מ֥וֹת יוּמָֽת׃
And he that smiteth his father, or his mother, shall be surely put to death. .
Read Jewish philosophy on Exodus 21:15: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.