OK Saul, I read the Douai Version of the Bible and I recognise that it may be impossible to identify a definitive text. I focus on the New Testament because that gives me plenty of food for thought about how I should live my life, how others live theirs is none of my business. As far as 'go then and teach all nations' is concerned that can only be done by living according to one's moral precepts and leaving others to judge whether that way of living is worth emulating. Anyone who believes they have a right to kill those of other faiths or deny them their religious practices is, I believe, beyond evil.
I do not point to the Bible as the explanation for everything, nor do I subscribe to the fundamentalist view that everything in the Bible is literally true, it demonstrably is not.
The Bible is not the correct explanation of everything we know. For me, the first four books of the New Testament present challenges to how I live my life and provide a framework for a morality which I find logical and consistent. Others choose to look elsewhere and that is no one's business but theirs. Please note, I said 'I find....' I am not asking anyone else to buy into it.
I think that perceptions of marriage have changed over time. As far as I am concerned marriage is a means whereby two people declare their love and fidelity publicly and thereby achieve a legal recognition of their relationship. If a couple wish to add a religious element to that, as my wife and I chose to do, that is entirely their affair.
Where does the term 'christianists' come from? Does anyone talk about muslimists, or sihkists, hinduists, or jewists?