[Ali Imran]

You're still living under the Old Covenant, where people seek God's forgiveness of their sins sans Christ or they think their sins could be covered through a system of giving sacrifices for their sins. Their sins were covered but never removed. The guilt was always there. Sin produces guilt, and guilt generates the need for a covering.

However, under the New Covenant - the second part of the Bible, the New Testament - Jesus became the perfect and final sacrifice. He didn't cover the sin but removed and completely washed them away, along with the guilt that accompanies them. With the coming of Christ - and the elimination of the sacrificial system, the temple, and the Levitical priesthood - the whole system which required ritual cleanness has been removed. In the OT, not all uncleanness was sin, but all sin made you unclean.

You've often accused us Christians of discarding God's commandments or being "lawless." We know our Bible better than you, bro. Remember that the only commands found in the O T (a word meaning "covenant" or "agreement") that are applicable to us today are those commands that are repeated in the N T. For example, the prohibitions against adultery, lying, homosexuality, and murder are all restated in the N T. The sexual ethic in Leviticus 18 and 20 is squarely reaffirmed in the N T.

I don't mean to rain on anyone's parade, but I've some bad news for those motivated more by lust than love, and excited by the prospect of bonking a harem of virginal sheilas. Polygamy is clearly rejected (1 Cor 7:2; 1 Tim 3:2), and this puts the mockers on that idea.

What is permissible, polygamy, Paul made it forbidden. And what is forbidden, discarding the Law, Paul made permissible. 

You have every right to follow Paul's teachings. But do know that what he taught opposed the teachings of Jesus and the previous prophets.

But at least you don't go around telling people to follow Jesus, unlike someone here.