What does the death of a limited number of men from the house of David (nineteen servants) show?

2 Samuel 2:30 (NEG79)

30 Joab revint de la poursuite d'Abner, et rassembla tout le peuple; il manquait dix-neuf hommes des gens de David, et Asaël.

The death of a limited number of David’s men confirms that the house of David was growing stronger and that his house enjoyed the Lord’s favour.