2 Samuel 3:1-3

1Now the war between the house of Saul and the house of David was protracted. And David grew stronger and stronger, while the house of Saul grew weaker and weaker.

2And sons were born to David in Hebron:

His firstborn was Amnon, by Ahinoam of Jezreel; 3his second was Chileab,1 by Abigail the widow of Nabal of Carmel; his third was Absalom, the son of Maacah daughter of King Talmai of Geshur;