Government: Monarchical by David
Source: Nav
2 Samuel 1:13–16
And David inquired of the young man who had brought him the report, “Where are you from?” “I am the son of a foreigner,” he answered. “I am an Amalekite.” / So David asked him, “Why were you not afraid to lift your hand to destroy the LORD’s anointed?” / Then David summoned one of the young men and said, “Go, execute him!” So the young man struck him down, and he died.
2 Samuel 4:9–12
But David answered Rechab and his brother Baanah, the sons of Rimmon the Beerothite, “As surely as the LORD lives, who has redeemed my life from all distress, / when someone told me, ‘Look, Saul is dead,’ and thought he was a bearer of good news, I seized him and put him to death at Ziklag. That was his reward for his news! / How much more, when wicked men kill a righteous man in his own house and on his own bed, shall I not now require his blood from your hands and remove you from the earth!”
2 Samuel 11:14–17
The next morning David wrote a letter to Joab and sent it with Uriah. / In the letter he wrote: “Put Uriah at the front of the fiercest battle; then withdraw from him, so that he may be struck down and killed.” / So as Joab besieged the city, he assigned Uriah to a place where he saw the strongest enemy soldiers.