2 Samuel 3:1-3

1Now the war between the house of Saul and the house of David lasted a long time. While David grew steadily stronger, the house of Saul grew steadily weaker.

2Sons were born to David in Hebron: his firstborn was Amnon by Ahinoam of Jezreel;

3his second was Chileab by Abigail the widow of Nabal the Carmelite; the third was Absalom son of Maacah daughter of King Talmai of Geshur;