There have been all sorts of relatives since the time of Cain and Abel, Joseph and his elder brothers, Laban against Jacob as well as Esau and Jacob. As things turned out, David wished his nephews, the sons of Zeruiah, one of his sisters, had not joined his army. They had a lusty craving for violence without reverence for God and immediate reality, whereas David reverenced God above anything else. You and I need God to shield us from the troubles that relatives constitute. Some are more of a curse than a blessing.