Whenever YHWH sets a leader over His people, He sets up some pretty high expectations. There are things that the people can do that the leaders must stay away from. Those who act as priests, prophets, and kings are expected to live at a higher standard than those who do not have a direct connection and responsibility to YHWH.
In this chapter those of the priestly line and especially the priests who serve the LORD are instructed that they may not defile themselves by a corpse unless it is a direct family member. Even then, the high priest may not even do that. They may not marry a woman who has been widowed or divorced, or who has slept with any other man at any time in her life. She must be a virgin or he may not marry her. Nor may a priest tear his clothes in mourning or uncover his head. If his daughter profanes herself in harlotry, it rests on him as well. Then finally, if there is any physical defect in a man, He may not serve as priest before the LORD. YHWH even goes so far as to say that if a man has a broken hand or foot, he may not serve the LORD.
Do we take our responsibility in representing the LORD seriously? Do we set ourselves apart from the world, or do we do what everyone else is doing? As people who pursue God and seek His work and will in our lives, we should be living examples of God and His work and will. We should be truly pursuing Him in all holiness.