Understanding the Distinction Between Clean and Unclean in the Book of Leviticus

Faustinus Purwanggo
5 min readJan 29, 2024

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The Book of Leviticus, a significant part of the Hebrew Bible, is often said as a guide to holiness and purity. Within its pages, a main theme circulates around the difference between clean and unclean. This distinction covers various aspects of life, from dietary laws to regulations on childbirth, skin diseases, mildew, and bodily discharges. In this article, we will explore the intricate details of these differences, exploring the cultural and religious importance as described in the Book of Leviticus.

Clean and Unclean Animals according to the Book of Leviticus

Clean and Unclean Food:

Leviticus describes a comprehensive set of dietary laws that differentiate between clean and unclean animals. In Leviticus 11, certain criteria are given for determining the cleanliness of animals. Clean animals are those that chew the cud and have split hooves, such as cattle, sheep, and goats. Unclean animals include those that do not comply with these criteria, like pigs, rabbits, and camels.

These dietary laws served various purposes. Firstly, they stressed the idea of holiness and separation, reminding the Israelites of their different identity as the chosen people of God. Secondly, they stressed the importance of obedience to God’s commands, requiring discipline and self-control in daily life. Paying attention to these dietary laws was seen as an act of worship, a way of expressing faithfulness to God through compliance to His instructions.

Purification After Childbirth:

Leviticus 12 look into the regulations connected with childbirth and the purification process for women after giving birth. The text says different periods of impurity for a woman based on the gender of the child. After the birth of a male child, the mother is considered unclean for seven days, and then the child is circumcised on the eighth day. After this, the woman remains in a state of purification for an additional 33 days. For the birth of a female child, the periods are doubled — 14 days of impurity, followed by 66 days of purification.

These regulations focus on the concept of ritual impurity associated with childbirth. The stress on purification underlines the symbolic importance of cleanliness and holiness. It signifies a period of separation, during which the mother is set apart for a specific time, which reflects the sacred nature of the act of giving life.

Rules for Skin Diseases:

Leviticus 13 addresses the regulations concerning skin diseases, a topic that involves a wide range of conditions, including leprosy. The detailed descriptions given in this chapter help differentiate between clean and unclean skin afflictions. Priests were called to examine individuals thought of having skin diseases and determine their status.

Clean skin conditions were those that could heal naturally, while unclean conditions, especially leprosy, were considered severe and required isolation. The overarching concern in these rules was to prevent the spread of contagious diseases within the community. In addition, the purification rituals connected with healing from skin diseases strengthened the importance of spiritual and physical cleanliness.

Rules for Mildew:

Leviticus 14 extends the concept of cleanliness to the realm of housing by discussing regulations for dealing with mildew or mold. If mildew appeared on the walls of a house, a priest would inspect it to determine its severity and whether the house was clean or unclean. The given actions for cleansing included scraping off the affected areas, washing the house, and, in extreme cases, pulling it down.

These regulations stressed the relationship of physical and spiritual cleanliness. The presence of mildew was seen as a sign of impurity, and the thorough process of inspection and cleansing highlighted the importance of maintaining a pure and clean dwelling place.

Cleansing from Skin Diseases:

Leviticus 14 also describes the rituals for cleansing individuals who have healed from skin diseases, including leprosy. After a person was stated clean by a priest, a series of purification ceremonies were carried out. This included the use of sacrificial offerings, like birds and lamb, as well as the application of blood and oil on certain parts of the body.

The detailed rituals underscored the transformative nature of the cleansing process. On the other side of physical healing, the ceremonies symbolized the restoration of the individual to the community, which underlines the importance of both physical and spiritual wholeness. The act of offering sacrifices signified a commitment to God and a recognition of His role in the process of restoration and purification.

Cleansing from Mildew:

Leviticus 14 not only discusses the cleansing of individuals but also gives guidelines for purifying a house corrupted with mildew. The rituals involve the use of cedar wood, scarlet yarn, and hyssop, along with the pouring of blood and the release of a live bird. These symbolic acts are intended to purify the house and state it clean.

The cleansing of a house from mildew echoes the larger theme of holiness and purity within the community. Houses were thought as extensions of the individuals living in them, and looking after the cleanliness of living spaces was considered important for the overall well-being of the community.

Releases That Cause Uncleanness:

Leviticus 15 addresses various bodily releases that could cause ritual uncleanness, including issues connected with menstruation, abnormal releases, and seminal emissions. The chapter describes certain periods of impurity for both men and women experiencing such releases. It stresses the importance of personal hygiene and the need for individuals to separate themselves during periods of uncleanness.

These rules not only underline the holiness of the human body but also focus on the relationship of physical and spiritual well-being. The concept of ritual uncleanness acted as a reminder of the need for purity in both individual and communal life, nurturing a sense of discipline and responsibility in complying with God’s commandments.

The Book of Leviticus provides an overall framework for comprehending the distinction between clean and unclean in many aspects of life. From dietary laws to rules on childbirth, skin diseases, mildew, and bodily releases, the text stresses the importance of holiness, purity, and compliance to divine commandments within the Israelite community.

These distinctions were not merely casual rules but were highly embedded in the cultural, religious, and symbolic fabric of ancient Israel. They acted as a constant reminder of the Israelites’ unique identity as the chosen people of God and the importance of living in accordance with His commandments. While these regulations may seem alien to modern sensibilities, they provide useful understanding into the religious and moral values of the ancient Israelite society and contribute to a broader understanding of the historical and cultural context in which the Book of Leviticus was written.

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