The Lord is concerned about his children living holy lives in an unholy environment, He doesn’t expect us to be holy as He is holy, unless there is a constant daily relationship which points out the difference between holy and unholy. So chapters 11-12 deal with the detail of this relationship in Holiness for his children’s daily lifestyle.
The summary of Leviticus 11:41-47 should point us to a similar statement in Lev. 20:24-26, which is the whole point of why the Lord gave Peter his vision of clean and unclean animals in Acts 10:9-29. Can we see how dietary laws are fulfilled at Christ’s coming? His presence of holiness in the Christian makes our body a special place that should be taken care of, see Romans 12:1. Do you believe God accepts any sacrifices you make to take care of your body? Are all of our sacrifices exclusively for saving other people, or could some of our sacrifices be for merely showing thankfulness to God for redeeming our bodies? See Romans 8:23.
The Jewish nation was made clean by the presence of a working Tabernacle/Temple, the food laws were given to show and maintain a unique status of Hebrews among the rest of the world. However, when the Spirit descended on the church in the New Testament, empowering believers for witness and worship in Spirit-filled assemblies in all nations, Acts 2:1-41, the “wall of separation” and the dividing ordinances were removed, Ephesians 2:11-22. If Israel could enter Christ then they did not lose status as “clean,” but now Gentiles also were made clean (see Acts 10:15-28). Congregations of Christ were now centers for worship—bringing the presence of God in grace among all nations. Peter was the first leader in the New Testament church to recognize the fact that the dietary laws were expired, Acts 10:9-16. This truth continues as Peter quotes from Leviticus 11:44 in an epistle to Gentile churches: “As obedient children, do not be conformed to the passions of your former ignorance, but as he who called you is holy, you also be holy in all your conduct, since it is written, ‘You shall be holy, for I am holy’ 1st Peter 1:14-16. Praise God for the privilege of Gentiles (you and me) being grafted into the blessings of the “olive tree” ~ Romans 11:17.
One of the most important roles of Jewish society was to reproduce. It is hard for us post-modern western minds to understand and appreciate the pride and privilege of reproduction having a Divine purpose which will bless the entire world with the Messiah/Christ from God, but that is an ancient sentiment and purpose every Jewish woman had ingrained in her being from infancy to adulthood. The highest most notable achievement of any woman was for her fulfilled role in bringing the Messiah/Christ closer into the world for the one and only true God of Israel. How do you think women felt about God making a way for their cleanliness to reflect holiness, in observing the laws regarding discharges of blood? Leviticus 12:1-8. How would Mary have felt? Luke 2:22-24 & 2nd Cor. 8:9.