Woven throughout 2 Samuel, we have a number of references to Joab (David's nephew and the commander of his army). Joab displayed many instances of loyalty to David. Sadly, this included when David asked him to do wrong. In those moments, Joab choose the easier path - of going along. This meant he kept his position and prestige - however, the easy road turned hard. We never read of him repenting - and his life comes to a truly tragic ending.