Numbers 5

v1-10: This command to purify the camp, by expelling from within it all those who were ceremonially unclean, finds its fulfilment today in the preservation of the purity of the church. “It is to glorify Christ and to build up his church that those who are openly ungodly and immoral and refuse to be corrected should be expelled and kept from” membership of the church “until they repent.”

v11-31: Adultery is to be treated as a great sin. “It is assumed to be a sin which sinners take great care to conceal.” Satan “draws sinners to this sin” and also “teaches them how to cover it up.” We are warned by this, that “it is not enough that [we] abstain from the evil of immorality,” but that we “must also abstain from every appearance of it, from everything that looks like it, or leads to it.”

Numbers 6

v1-21: Those who made a Nazarite vow, setting themselves apart for God and his honour, were to “be examples of moderation and mortification.” They were to take “the greatest care in avoiding sin and everything that borders on it and may lead to it,” keeping themselves, “pure in heart and life” and conforming “in everything to [God’s] image and will.” The more we profess faith “and the more renowned we are, the greater care we must take to avoid all sin, for we have all the more honour to lose by it.”

v22-27: The blessing of God that the priests blessed the people of Israel with, and which Jesus blesses us with are “protection from evil”, “pardon from sin”, and “peace, including all good which goes to make up complete happiness.”