1 Samuel 17:20

17:20 So David got up early in the morning and entrusted the flock to someone else who would watch over it. After loading up, he went just as Jesse had instructed him. He arrived at the camp as the army was going out to the battle lines shouting its battle cry.

1 Samuel 21:2

21:2 David replied to Ahimelech the priest, “The king instructed me to do something, but he said to me, ‘Don’t let anyone know the reason I am sending you or the instructions I have given you.’ I have told my soldiers to wait at a certain place.

1 Samuel 25:13

25:13 Then David instructed his men, “Each of you strap on your sword!” So each one strapped on his sword, and David also strapped on his sword. About four hundred men followed David up, while two hundred stayed behind with the equipment.