That sounds to me like cherry picking. You can say that about a great deal of passages if you really wanted to. People and culture have evolved in many ways since the Bible was written. You pointed out that "a certificate of divorce" was once allowed but Jesus did away with that. Did he also do that with polygamy? Or, since you brought it up, slavery? What else did he change specifically? Or, as your argument states, have things simply changed because the culture and times have? Let me hit on a hot topic item...homosexuality. As time goes on it becomes more accepted within our culture. Will in 20 or 40 years (if things progress as they currently are) that passage in Leviticus simply be another time, another place, another culture, and another people?
Seems a dangerous argument to make.
MY SISTER,
Your point is a valid one. However, just as God created all things, He has control over all things, and He manifests His will to us though His indwelling Holy Spirit. When God desires change in the process of raising His children to a new level of Spiritual Growth, the directions regarding change and the Power to bring that change about come through Him.
To briefly answer your questions: Yes, it was Christian leadership which guided and Christian "soldiers" which brought about the end of slavery in the west, just as it was Christian leadership and Christian "soldiers" which fought for Civil Rights in the recent past. (You might compare this with the result of the efforts of atheist leadership and atheist "soldiers" bringing about changes in Soviet Russia, Communist China, North Korea, Cambodia, etc. The differences between the powers of Light and darkness should be obvious!)
Polygamy had ceased in Jewish society by Jesus' time, but He did stress the sanctity of marriage and always spoke of it in the singular, as in,
"Anyone who divorces his wife and marries another woman commits adultery against her. And if she divorces her husband and marries another man, she commits adultery."(Mark 10:11,12) And Paul, of course, throughout his Letters stresses the need for Christian leaders to set good examples by being
"the husband of one wife" as in I Timothy 3:2. There are no exceptions to monogamy mentioned in the New Testament Scriptures.
So, in part, you are right by stating that societal changes are at least partially culturally defined and instituted, but you must realize that up until recently, our culture has been of Judeo-Christian origin, and there is no separation between Church and State where the workings of the Holy Spirit are concerned. As the Thirteenth President of the United States, Calvin Coolidge, put it,
"The foundation of our society and our government rest so much on the teachings of the Bible that it would be difficult to support them if faith in these teachings would cease to be practically universal in our country." However, you mention homosexually as an example of views towards sinful taboos changing in society by cultural means. In the case of homosexuality, as in the case of "legalized" abortions, the change you speak of is a change brought about by our society turning away from God, from its Judeo-Christian heritege, and the moral standards upon which this country was founded, and blindly wandering off into the darkness of moral relativity which, unfortunately, my generation planted and nurtured the seeds of in the 60's and 70's. There is ample evidence, for example, that "free love" is far from "free", but our society has become so blinded by "doing its own thing" that it cannot see the decadence and destruction brought about by its turning from God and creating its own, ever-changing/ever-shifting, ideas regarding right and wrong, good and bad, moral and immoral, etc.
So, in essence, you are witnessing the death of a culture rather than mere superficial culture-wrought changes. It is, in essence, a descent into moral anarchy. That this descent is well adviced--perhaps past the point of no-return, should be beyond question for anyone with access to the morning newspaper or the evening news.
Finally, the greatest change our Lord Jesus brought about was His changing the
external governing by the harsh law of the Old Testament into the
internal self-governing of our Love for God as mediated and expressed under the direction and through the Power of the indwelling Holy Spirit. As St. Augustine put it,
"Love, and do what you will." Christians seek to do God's will in all things not because of fear of Him, but because of our Love of Abba and our gratitude for all He has done for us through His glorious Grace--not the least of which is the gift of His Son to be our Brother, Mentor, and Guide.
MAY YOU EXPERIENCE GOD'S GRACE AND PEACE FOR YOURSELF!
IN CHRIST,
ephraim