2 Samuel 3:5

New International Version

and the sixth, Ithream the son of David’s wife Eglah. These were born to David in Hebron.

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the fourth, Adonijah the son of Haggith; the fifth, Shephatiah the son of Abital;

During the war between the house of Saul and the house of David, Abner had been strengthening his own position in the house of Saul.

the fifth, Shephatiah the son of Abital; and the sixth, Ithream, by his wife Eglah.

Children are a heritage from the Lord, offspring a reward from him.