the sixth was Ithream, by David’s wife Eglah. These were born to David in Hebron.
the fourth was Adonijah, son of Haggith; the fifth was Shephatiah, son of Abital;
During the war between the house of Saul and the house of David, Abner kept acquiring more power in the house of Saul.
Shephatiah, by Abital, was fifth; and Ithream, by David’s wife Eglah, was sixth.
Sons are indeed a heritage from the Lord, children, a reward.