2 Samuel 16:5-7, 9-10

As King David approached Bahurim, a man from the same clan as Saul’s family came out from there. His name was Shimei son of Gera, and he cursed as he came out. He pelted David and all the king’s officials with stones, though all the troops and the special guard were on David’s right and left. As he cursed, Shimei said, “Get out, get out, you murderer, you scoundrel!

Then Abishai son of Zeruiah said to the king, “Why should this dead dog curse my lord the king? Let me go over and cut off his head.” But the king said, “What does this have to do with you, you sons of Zeruiah? If he is cursing because the LORD said to him, ‘Curse David,’ who can ask, ‘Why do you do this?’ ”