2 SamuelChapter 4

When Ish-bosheth, Saul's son, heard that Abner had died at Hebron, his hands went limp, and all Israel was shaken.
Saul's son had two men who were commanders of raiding bands. One was named Baanah and the other Rechab; they were sons of Rimmon of Beeroth, of the tribe of Benjamin—for Beeroth too was reckoned as belonging to Benjamin.
The people of Beeroth had fled to Gittaim, and they have lived there as foreigners to this day.
Now Jonathan, Saul's son, had a son who was crippled in both feet. He was five years old when the news about Saul and Jonathan came from Jezreel. His nurse picked him up and fled, but as she hurried away, he fell and was left lame. His name was Mephibosheth.
Rechab and Baanah, the sons of Rimmon of Beeroth, set out and came to the house of Ish-bosheth in the heat of the day, while he was taking his midday rest.
They came right inside the house while the wheat was being taken in, and they struck him in the belly. Then Rechab and his brother Baanah slipped away.
They had entered the house while he lay on his bed in his bedroom, and they struck him down and killed him. They cut off his head, took it with them, and traveled all night by way of the Arabah.
They brought the head of Ish-bosheth to David at Hebron and said to the king, "Here is the head of Ish-bosheth son of Saul, your enemy, who sought your life. Today the LORD has avenged my lord the king on Saul and his offspring."
But David answered Rechab and his brother Baanah, the sons of Rimmon of Beeroth: "As surely as the LORD lives, who has redeemed my life from every distress—
when a man told me, 'Saul is dead,' thinking he was bringing good news, I seized him and killed him at Ziklag. That was the reward I gave him for his news!
How much more, when wicked men have murdered an innocent man in his own house, on his own bed—shall I not now require his blood from your hands and rid the land of you?"
So David gave the order to his men, and they killed them. They cut off their hands and feet and hung the bodies beside the pool in Hebron. But they took the head of Ish-bosheth and buried it in Abner's tomb at Hebron.