The Holiness Code is a collection of many laws concerning several subjects. Critical scholarship therefore regards it as being generally a work constructed by the collecting together of a series of earlier collections of laws. One of the most noticeable elements of the work is a large section concerning various sexual activities, which are prohibited "lest the land vomit you out". These prohibitions include sexual relations with one's mother, step-mother, sister, step-sister, sister-in-law, aunt, granddaughter, daughter-in-law, with a woman as well as her daughter, with a ritually unclean woman, with the wife of a neighbor, with another man, or with an animal; and the sacrifice of children to Molech (numerated just prior to Lev.18:22. These prohibitions are listed in Leviticus 18, and again in chapter 20, both times with the warning "lest the land vomit you out." While Leviticus 18 presents them as a simple list, Leviticus 20 presents them in a
chiastic structure based on how serious a crime they are viewed, as well as presenting the punishment deemed appropriate for each, ranging from
excommunication to
execution. Leviticus 20 also presents the list in a more verbose manner. Furthermore, Leviticus 22:11–21 parallels Leviticus 17, and there are, according to
textual criticism, passages at Leviticus 18:26, 19:37, 22:31–33, 24:22, and 25:55, which have the appearance of once standing at the end of independent laws or collections of laws as
colophons. For this reason, several scholars view the five sections preceding between each of these passages as deriving from originally separate documents. In particular, the two segments containing the sexual prohibitions, Leviticus 17:2–18:26 and Leviticus 20:1–22:33, are seen as being based on essentially the same law code, with Leviticus 20:1–22:33 regarded as the later version of the two. Chapter 19, which ends in a colophon, has a similarity with the
Ten Commandments (Ethical Decalogue), although presenting a more detailed and expanded version, leading critical scholars to conclude it represents a much later version of that decalogue. Notably, it contains the commandment popularly referred to as
love thy neighbour as thyself (the
Great Commandment). By this reckoning, there are thus at least five earlier law collections which were
redacted together, with an additional
hortatory conclusion, to form the Holiness Code. Two of which contain a list of sexual prohibitions, and one of which was a development of the
Ritual Decalogue. ==Comparison with other biblical law codes==