1 Samuel 20:30 - Matthew Poole's English Annotations on the Holy Bible

Thou son of the perverse rebellious woman; this base temper of thine thou hast not from me, but from thy mother; of whose perverseness I have had so much experience. Or, thou son of perverse rebellion, i.e. thou perverse and rebellious son. Or, thou most perverse rebel; for in the Hebrew language, the word son thus used, is an aggravation of a man's crime, and notes one who is extraordinarily addicted to it. Thus he calls him, because he hid and preserved that man whom the king had commanded to be brought forth, that he might be slain. To thine own confusion; for it will be a horrible shame and reproach unto thee, that David by his crafty insinuations, and fair pretences, should cheat thee of thy kingdom. To the confusion of thy mother's nakedness; men will conclude, that thy mother was a whore, and thou a bastard; and that thou hast no royal blood in thy veins, that canst so tamely give up thy crown to so contemptible a person.