This chapter concludes the regulations on uncleanness (chs. 11-15).
"The uncleanness laws start with uncleanness that is permanent: that associated with various animals and food (ch. 11). Then they deal with the uncleanness of childbirth, which may last up to eighty days (ch. 12). Chs. 13 and 14 deal with uncleanness of indefinite duration; it all depends how long the serious skin disease persists. Finally, ch. 15 deals with discharges associated with reproduction, pollutions which usually only affect a person for up to a week. Whatever the explanation of the order of the material within chs. 11-15, these laws illuminate the day of atonement rituals, which are designed to cleanse the tabernacle of the uncleannesses of the Israelites' (16:16). Without these chapters we should be at a loss to know what was the purpose of the ceremonies described in ch. 16."159
Moses described four cases of secretions from the reproduction organs that resulted in ritual uncleanness in this chapter. Two of these cases arose from disease and two from natural causes. The chapter opens with an introductory statement (v. 1) and closes with a summary (vv. 32-33), which we have come to recognize as typical in this part of Leviticus. In the four central sections, there is a definition of the type of pollution, a description of its consequences, and an explanation of the appropriate rite of purification. The rite usually involved simply a wash and a wait until evening.
The first two cases concern continuing and occasional emissions of the male. Moses followed these with the last two cases that reverse this order and deal with the female. The writer apparently used this chiastic literary structure to demonstrate the unity of humankind in two sexes. Verse 18, the center of the chiasm, mentions sexual intercourse, the most profound expression of the unity and interdependence of the sexes.
15:1-15 The first case is the secretion caused by some disease affecting a man's sexual organs.160The writer did not describe the physical problem in detail. The terms used seem to refer to either a diseased flow of semen (gonorrhea) or a discharge of pus from the urethra.161In either case this was a fairly lengthy ailment (v. 3).
Another possibility is that this first case describes some affliction that both men and women suffered, such as diarrhea. The Hebrew words translated "any man"(v. 2) permit this. However the structure of the chapter and the references to the sexual organs argue against this view.
Note that things that the man sat on in his defilement, those things under him (bed, chair, saddle), became unclean and a source of defilement themselves. Also any direct contact with an unclean man resulted in uncleanness for those who touched his person (v. 7).162
"It is the uncleanness of the man and its consequences that are the main concern of this section. The striking thing about the uncleanness associated with these discharges is that not only the affected person becomes unclean, but also people and objects that come in contact with him, and these in their turn can become secondary sources of uncleanness. In this regard the uncleanness described here is much more infectious' than the uncleanness of skin diseases dealt with in chs. 13-14. . . . In this respect, then, gonorrhea in men and menstrual and other female discharges are viewed as much more potent sources of defilement than others."163
Nevertheless the uncleanness that these discharges caused was less serious ritually than those associated with skin disease. The man could live at home; he did not need to move outside the camp. He just had to wash and wait until evening (vv. 16, 18); he did not need to go through a more elaborate ritual. He also needed to offer only two inexpensive sacrifices (v. 14; cf. 14:10-20).
15:16-18 The second case deals with a voluntary emission of semen. Note that it was not sexual intercourse generally that produced the uncleanness but specifically the emission of semen in coitus or at other times (cf. Exod. 19:5; 1 Sam. 21:5-6; 2 Sam. 11:4).
"The intent was to keep a legitimate but unclean' biological function from defiling that which was [otherwise] holy."164
The purification process involved no sacrifice, only washing and waiting until evening (vv. 16, 18).
"The practical effect of this legislation was that when a man had religious duties to perform, whether this involved worship or participation in God's holy wars, sexual intercourse was not permitted."165
"The banning of the sexual and the sensual from the presence of God (Ex. 19:15, [sic] 20:26; Lev. 15:16-18) may have been one of the most noteworthy characteristics of Israel's religion, uniquely distinguishing it from the other religions of the ancient Near East."166
15:19-24 The third case deals with the woman's menstrual cycle.
"By placing the woman in what amounted to a state of isolation, the legislation made it possible for her to enjoy some respite from her normal duties, and gave her an opportunity of renewing her energy."167
This law appears very harsh to the modern reader. It appears to consign virtually every woman in Israel to a state of being untouchable for one week each month. Some authorities, however, believe that women in ancient Israel had menstrual periods far less frequently than modern women. They believe that earlier marriage, later weaning (up to the age of two or three), and the prevalence of large families made these unclean periods far more infrequent.168Those most affected by this law were probably unmarried teenage girls. The result would have been that God-fearing young men would have been wary of making physical contact with them. This law then would have had the effect of curbing the passions of the young.
15:25-33 The fourth case involves a woman who had continuing menstrual problems beyond her normal period. The ritual for purification was the same as for a man with an extended sexual malady (case one above, vv. 13-15; cf. Mark 5:25; Luke 8:43).
Verse 31 explains the reason for these regulations. God gave them so the Israelites would not fall into serious sin because of ignorance of how they should behave when unclean. The rules about bodily discharges helped the Israelites appreciate the seriousness of intermarriage with the Canaanites and the prohibitions against foreign customs and religion, which conflicted with Israel's holy calling. God discouraged certain acts by designating them as resulting in uncleanness, which undoubtedly proved helpful in the area of private morality where legal sanctions are not as effective as in public life.169
"The sexual processes thus make men [and women] unclean, but that is not the same as saying they are sinful. Uncleanness establishes boundaries of action, but as long as these are not transgressed no guilt is incurred."170
"One valuable feature of this legislation that had an important bearing upon Israel's cultic and social life was the rule which made partners in coition unclean for the whole day. This contingency separated sexual activity from cultic worship in a unique manner, and this precluded the orgiastic fertility rites that were so much a part of religion among peoples such as the Canaanites. Furthermore, the continuous state of ceremonial uncleanness experienced by the prostitute in Israel would remove any possibility of her participation in Hebrew worship, and take away anything approaching respectability from her way of life, if, indeed, she was at all sensitive to the requirements of the sanctuary."171
What made these secretions unclean was perhaps their association with unnatural (irregular) bodily functions. Childbearing (ch. 12) and the bodily fluids involved in procreation (ch. 15) were ritually unclean because they have connection with what is abnormal in terms of regularity. They were not unclean because sex is sinful. It is not (Gen. 1:28).
Note the slightly different view of another writer.
"Within this framework it becomes clear why the conditions described in Lev. 12 and 15 are polluting. They all involve the loss of life liquids.' Life is in the blood' (Lev. 17:11, 14). Thus a woman suffering from any bloody discharge, whether it be the puerperal discharge (Lev. 12:4-5), menstruation (15:19-24), or some other malady (15:25-30), is presumed to be losing life. Bleeding may eventually lead to death. So the discharging woman is regarded as unclean in that she evidently does not enjoy perfect life: indeed unchecked her condition could end in her death. Similarly too we presume that male semen was viewed as a life liquid.' Hence its loss whether long-term (15:1-15) or transient (15:16-18) was viewed as polluting."172
Sin is wrong done to God, but ritual uncleanness was a condition that while related to sin was not itself sinful. Sin separated the person further from God than uncleanness did. These conditions did not result in the sinfulness of the Israelite but in his or her disqualification from public worship in the nation.
Jesus' attitude toward the laws about bodily uncleanness were the same as His attitude toward the food laws. When He came He announced the end of their authority because God would open the church to Jews and Gentiles equally. These Israelite laws separated Jews from Gentiles by illustrating Israel's unique function in God's program, which ended temporarily (until the Millennium) with the death of Christ.173