We learn from Leviticus 22:1-7 “that ‘leprosy’ or ‘the running issue’ excluded even a son of Aaron from the camp...
C. H. Mackintosh, in his Notes on the Pentateuch, discusses church discipline in his commentary on Numbers 5:3 - "that they defile not their camps, in the midst whereof...
When Moses was distressed because of the greatness of the task of leading the children of Israel through the wilderness, God commanded him to gather seventy elders to help him carry the burden (Numbers 11:16). Moses gathered the seventy round about the tabernacle and the spirit that was on Moses rested on the seventy (Numbers 11:24-25).
There are five major offerings described in the Old Testament (Leviticus 1-5): burnt, meat, peace, sin, and trespass. One them, the meat offering, does not use an animal sacrifice. The other four do. However, the offerings differ in whether the animals are to be male or female. Here is how they are specified. The burnt offering is to be a male (Leviticus 1:3, 10). The peace offering can be either male or female (Leviticus 3:1, 6). The sin offering is to be male when offered for "a ruler" of the people (Leviticus 4:22-23) but a female when offered for "one of the common people" (Leviticus 4:27-28). Finally, the trespass offering is to be a female (Leviticus 5:6). The question is why.
In the 1780's, the Baptist pastor John Leland was fighting against Virginia state taxes going to support the Episcopalian clergy. One clergyman argued that they had to have the tax income in order to have the time needed to prepare for sermons. Leland responded that he could expound the scriptures without special preparation and the Episcopalian challenged him to prove it by preaching on a text provided just before the sermon. "Leland went into the pulpit and was handed a text which proved to be Numbers 22:21, 'And Balaam saddled his ass.' Mr Leland first commented on the account from which the text was taken, and then said he should divide his subject into three parts: 1st, Balaam, as a false prophet, represents a hireling clergy; 2nd, the saddle represents their enormous salaries, and 3rd, the dumb ass represents the people who will bare such a load." Quote taken from "How Satan Turned America Against God" by William P. Grady (p.159-160).