Injury

The angel struck Jacob on the hip to make him understand at least two things: One, that even the injured and the broken can win if God wills it; and two, to mark him for life, reminding him that winning and success should be tied to humility. For if our own strength remains intact and we never suffered any injury or dislocation, we would become too proud of our achievements and we would forget that the only reason we won is because God allowed us to.