Leviticus 15 explained: Bodily Fluids and Ritual Purity

A man's ongoing discharge (vv. 1-12)

This seems to be a discharge from the genitals caused by illness, though the exact condition is unclear. Being "unclean" meant being barred for a while from worship and holy things, not being guilty of wrongdoing; it passed to others through touch, and clay pots he touched had to be broken, for a reason the text does not give.

Becoming clean again (vv. 13-15)

Once healed, the man waited seven days to be sure the illness was gone, bathed in fresh running water, then brought two inexpensive birds to the priest. The offering often translated "sin offering" is widely understood by scholars as a purification offering, cleansing the effects of impurity rather than punishing a moral failing.

Normal male emissions and sex (vv. 16-18)

An ordinary emission of semen made a man unclean only until evening and needed just a bath. When it happened during sex between a man and a woman, both bathed and were unclean until evening.

A woman's monthly period (vv. 19-24)

A period brought seven days of impurity, and anyone touching her or her bed was unclean until evening. Many scholars think these rules connect to the loss of blood, which Israel saw as carrying life, though the exact reasoning is not stated.

A woman's prolonged bleeding (vv. 25-30)

Bleeding outside or beyond the normal period was treated like the man's illness in verses 1 to 15, with the same waiting time and the same offering of two birds. Christians later read this alongside the Gospel story of a woman who bled for twelve years and was healed when she touched the edge of Jesus' cloak.

Why these rules mattered (vv. 31-33)

The stated reason is to protect the sanctuary, the tent where the LORD was believed to live among the people, from being treated carelessly. Bringing impurity into that holy space was considered deadly serious, and the chapter ends by summing up the cases it covers.

Key verse: Leviticus 15:31

Where Christians differ

Christians differ on whether these purity laws mainly symbolize moral sin, served practical health purposes, or chiefly taught reverence for the holy, and on what, if anything, they mean for believers today.

Something to think about

Every culture has unwritten rules about the body and what counts as private, shameful, or set apart; where do you notice those rules in your own life, and where do you think they came from?