A Natural-Law Argument for Premarital Chastity, Marital Fidelity, and Traditional Marriage

He answered, “Have you not read that he who made them from the beginning made them male and female, and said, ‘For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one?’” Matthew 19:4-5

            There is a very simple syllogism found within the natural law, one that has been universally recognized by (almost) all human peoples throughout history, and until recent times has been considered far too obvious to question.  The syllogism goes that:

1. There are two distinct types of people, which can be easily recognized by the different body parts they possess. 

2. The different body parts of the two sexes are clearly designed for each other and intended to be joined together, in an act that results in the conception and eventual birth of new children.

3. After children are born, they must be cared for lest they die, as well as taught how to survive and how to function within human society.

4. The proper people to care for and raise children are the parents who begot them.  For best results, both parents must be involved in raising and caring for the children, and must cooperate fully and closely with each other in the process. 

5. A solemn commitment is even called for to ensure that two people of opposite sexes are fully committed to remaining together for the rest of their lives, in order to be able to raise children together properly.

6. Therefore, the procreative sexual act should be engaged in only by two people of opposite sexes who have already made this solemn commitment that they will remain together, be open to having children together, and raise their mutual children together for the rest of their lives.

7. The name given to this full and solemn commitment is… (ta da!)

MARRIAGE!  Quod erat demonstrandum.

            And from this syllogism, it can be seen that the nature of marriage is absolute and inseparable from the mere fact that there are two sexes.  The importance of premarital chastity, marital fidelity, ‘traditional’ marriage, and even complete openness to life are all inseparable from the nature and purpose of marriage itself, and can be easily seen from the natural law, without any need for religious beliefs or revealed truths to be invoked.  And nothing can change the fact that fornication, adultery, homosexual activity, and contraception fly in the face of any and all sound logic regarding the very nature of man and the very purpose of erotic love and attraction.

            In an upcoming post I hope to address some of the many objections to this syllogism that are far too prevalent today.  Feel free to contribute ‘objections’ (hopefully presented in a Devil’s Advocate style!) that you would like to see addressed.

2 thoughts on “A Natural-Law Argument for Premarital Chastity, Marital Fidelity, and Traditional Marriage

  1. Excellent post! This message is very much needed in these times. In the interest of stimulating some conversation, I would like to present a Devil’s Advocate objection. Your thesis is that individuals of opposite sex must remain together for the sake of raising the children that proceed from that union. Logically, point #5 does not follow from that, where you state “a solemn commitment is even called for to ensure that two people of opposite sexes are fully committed to remaining together for the rest of their lives.” Instead, the couple should only be required to remain together until all children attain the age of majority. How do you respond to that?

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