StRadical
I'll be honest. I didn't even know that you made any reference to "ONE FLESH" per se, but it just goes to prove that we are on the same page. What you say about the sixties is so true. In the sixties they had to learn that there are consequences for loving corruption and confusion as much as there consequences for loving correctly.
From a scientific standpoint, adulteration is also a process that renders a substance "impure". A chemist will regularly adulterate various substances in a laboratory setting to observe and learn what the outcome, product, or consequence, of that adulteration will be. The "love experiments" of the sixties also produced many results that were not conducive to a healthy society. Many of these experiments continue in corruption even today.
I think it stands to reason why the Lord God told His people, "Thou shalt not commit adultery." Geneticists and other scientists are doing this on a daily basis without even realizing it: Adulterating our genetic material with other material. They are interested in what the consequences will produce; hence, stem cell research.
As for the secular government writ commonly called the "marriage license", few people understand that this was also based on an experiment in Louisiana after the slaves were freed. At that time many "concerned citizens" desired to keep track of the affairs of their former slaves. They were very concerned about something called miscegenation, a form of what many racist individuals considered to be "adultery". As a result of this great concern for inter-racial marriage they invented a new law that required all "mixed-marriages" to apply for a marriage license. Prior to this, there was no secular marriage license in all of the U.S.A. Neither did the churches of GOD have any such custom. (All of this can be verified in Black's Law Dictionary.)
The custom of paying the State government for permission to marry worked out so well for the State of Louisiana, that other states quickly followed suit. In 1923 the Uniform Marriage and Marriage License Act was established by the Federal government. In 1929 the name of this act was changed to the Uniform Marriage and Divorce Act.Under this act it became mandatory for all residents in the U.S.A to register their intentions to marry (if they had such intention) with a State endorsed marriage license, regardless of race, creed, or colour; but in the beginning it was not so.
What I find most interesting concerning the matter of licensing marriages is that the incidence of legal divorcement in the U.S.A., after the establishment of this Act in 1923, has increased over 600% by ratio, with respect to prior divorcement records (which have a much earlier history). This should be ample proof that rings and vows and paper writ do not a marriage make. It begs to be stated again, that in the beginning it was not so?
Blessings