2 Samuel 12:28

Now, therefore, gather the rest of the people together, mustering all those able to bear arms, and encamp against the city, the citadel on the heights, and take it, lest I take the city and it be called after my name. Joab here acted either as a devoted servant of David, who honestly wished him to have all the honor in the campaign, or as a shrewd politician, who would run no risks by gaining extraordinary successes.