In the context of ancient Israel, priests were expected to maintain a high level of ceremonial purity, which included avoiding contact with the dead. However, this verse provides an exception for priests, allowing them to become ceremonially unclean for the sake of a close family member who is unmarried and without a husband, like a sister. This exception underscores the value placed on family relationships and responsibilities, even within the strict religious framework of the time.
The permission granted here reflects a compassionate understanding of the priest's role not only as a religious leader but also as a family member. It highlights the balance between upholding religious duties and fulfilling personal obligations to family, showing that compassion and care for one's immediate family are integral to faith. This principle resonates with the broader biblical theme of love and responsibility towards family, illustrating that faith is not just about rituals but also about relationships and caring for those closest to us.