Well to do the second point first. For Mormons and Muslims, if you can tolerate the religion and it 'fits' for you, it can provide a firm answer for or against monogamy and authority. It may not be the one I'd agree with, but it will continually be reinforced for adherents of those faiths.

I'm not sure I follow. If I come to you saying "I'm not sure if monogamy is the right thing to do", your answer is "it's the right way because the Bible says so"? That's a pretty unhelpful answer unless I already happen to believe that the Bible is true.

Specifically in relation to the blog poster's article, I detected someone who knew what Christianity was on some level and was writing about the topic of monogamous relationships and authority from the counter-perspective to Christianity. So I wanted to re-open that topic for the author of the blog post and remind him/her (her in this case) that the answer can be found in Christian thought and specifically not in fundamentalist evangelism and young earth creationism and all that she was involved in.

Providing grounding for monogamy as a whole depends on the christian faith you attend. There are common threads of value in monogamy across all christian faiths, like the marriage of a man and woman under God. The connection to God and the whole of the christian faith is a tremendous benefit of monogamy and marriage in a religious faith as it provides a solid and external whole to tie one's relationship together and to be one with a tradition of marriage that has lasted a long time and gives you a community of people who support the idea of marriage. It frequently gives you a lot of ancillary community benefits or connections and knowledge about marriage and the resulting difficulties, but those side benefits are not structured as an explicit argument for christian marriage in common conversations about it.

The separate denominations or branches of Christianity have more detailed supports of marriage which vary based on the thinking and logic of their faith. Some examples include:

- Catholics have many many arguments for making a marriage from natural law, perfect form and lengthy spiritual reasoning around relationships and the different catholic monastic orders (Franciscans, Dominicans, Carmelites, ect) have fleshed out the idea in accordance with the pursuit of their monastic way of life. Summarizing it is difficult as the Magisterium, the authoritative Catholic version of the Word of God, can take decades to scratch the surface and the Dominican monks spend most of their time reading and exploring the tradition. One Franciscan monk (the more relatable monks) describes the convenant of marriage in catholicism here[0].

- Orthodox have a phenomenological worldview which features a view of the world from the 'first person perspective' and builds a rich and fulfilling set of symbolic interpretations and cycles of the subjective experience of living in the world. This worldview uses simple language to fill in one's mysterious relations and soul satisfying connection to a wife with rich symbolic and active participation in a long standing tradition. This view is hard to communicate a summarized view of marriage because it makes more sense, the more you ingest their symbols and symbolic worldview. Without the pre-requisite knowledge it's like a lego piece without the picture on the box and the instructions and the rest of the lego set.

- Episcopalians (Anglicans) have a long running hierarchical tradition that emphasis a nurturing community which accepts people from many different beliefs into one 'lake' of members who worship the same god. The faith emphasizes a personal connection to god and those around them where communion with the laity is a central feature. A go-with-the-flow attitude to conflict and reasoning the church offers a secure and long-running emotional direction for a marriage to follow. The arguments for marriage are usually because of common reasoning about being better for children and society and all that, largely the focus and benefit of Anglican faith is on the emotional support, long running traditions and guided behaviour. One is quite often encouraged to seek theological answers themselves and bring a new and fresh interpretation, a new angle on things. It is almost he opposite style of thinking to the catholic focusing on teachings, even though the faiths share quite a lot in common.

The arguments you get out of these versions of Christianity will differ in style drastically as they think about the world differently, though ultimately agree on quite a lot of basic elements of marriage and faith. The Bible is the source material for a much much larger "programming language" of discussion around faith. Like higher-level programming languages are built on machine code, so are some of these faiths built on the Bible. The level of added detail from the biblical interpretation varies wildly and some faiths prefer sola scriptura (only scripture, only the bible).

Those two abrahamic religions in particular, Mormonism and Islam vouch for the authenticity of the Bible yet seek to extend off it with fallacious arguments that the bible itself contradicts. Which is a bucket of worms in itself.

Discussions about authority suffer from the same level of difference between the faith branches and the same necessity to build it up from little knowledge to some knowledge to a lot of knowledge. People who can tolerate, or whom believe in a faith structure that has an authoritative structure, will find somewhere between much less and no rebellion in the rest of their lives against authority as a concept. They will likely see the relationships around people with authority much more clearly, as any faith makes it clear how you relate to people around you.

The faith the blog poster grew up in, is in much more radical opposition to the "old standby" faiths and may have opened the door for some basic tenets of christian to slip by her grasp. If she wanted to grasp them, of course it's up to her and anyone else to have a look in.

Summarizing the "christian view" on marriage is a bit difficult as the value in Christianity doesn't always fit inside words and the words used are usually built on other words of which few people get the context, as we live in a largely secular society that is not educated in religious symbolism whatever the outcome. There is a lot of rich and seductive ideas about monogamy, the "shortest version" of the christian ideas are probably best found as a writers' philosophical quotes from the last two thousand years.

C.S. Lewis (famous Anglican/Episcopalian from the 1900s)

The Christian idea of marriage is based on Christ's words that a man and wife are to be regarded as a single organism - for that the words "one flesh" would be in modern English. And the Christians believe that when He said this He was not expressing a sentiment, but stating a fact - just as one is stating a fact when one says a lock and it's key are one mechanism, or that a violin and bow are one instrument.

G.K.Chesterton (famous Roman Catholic from the early 1900s)

Variability is one of the virtues of woman. It avoids the crude requirement of polygamy. So long as you have one good wife you are sure to have a spiritual harem.

also

I have known many happy marriages, but never a compatible one. The whole aim of marriage is to fight through and survive the instant when incompatibility becomes unquestionable. For a man and woman, as such, are incompatible.

[0]https://youtu.be/sTEApwJCh_Y?t=73