As an LCMS, I visited an Mormon (Latter-Day Saints) Temple today.
Last time, I visited and told my perspective of the WELS, our closest denomination. Today, I visited the total opposite religion of us, Mormonism. This is part of just a few weeks of post-graduation, where I am working part-time and with this additional time-off been visiting all sorts of different churches, learn about their religions, and hopefully improve at my apologetics.
First of all, everything I say here is read from my perspective as a Confessional Lutheran. Note that Mormons might use many overlapping terminologies as us, but they mean totally different things. I don't know anything about their religion, I'm just retelling my story of what I saw today. For answers to deeper theological understanding of the Mormon religion, we are blessed to have u/Over-Wing who can provide a much more profound understanding and more clarifications.
The first glaring observation that I saw was that despite the fact that LDS claims to being an ancient orthodox church created by God from the beginning of time, the architecture of their temple is glaringly modern. In fact they not only seem so unbothered by the modern architecture, actually to them it is pride point. They also seem to take pride in the fact that architecture changes with each generation, whereas we Lutherans take pride in an unchanging tradition. It's almost as if the LDS architecture reflects a continuity of updating revelations.
The second glaring observation was how opulent the building was. The temple was probably one of the most ornate and beautiful buildings I have ever stepped foot in, but with a type of ornateness totally opposite of say a Gothic Cathedral like Cologne. I now understand why every Marriott Hotel looks like this architecture. It was ornate, but not tacky at all; I remember knocking on a random door and realized it was solid wood and mahogany. The finest construction build quality I have ever seen in my life. And as a side observation, their temple is actually the total opposite of what we would think of a cathedral. Their temples close on Sundays, and they do not hold worship services in the temple. Temples are meant for the Mormon equivalent of "Sacraments" like marriages, eternal sealings, and a couple of other things I no longer remember off the top of my head.
Three, I felt that Mormon Baptism in many ways is actually the anti-Baptism of our Sacrament of Holy Baptism. It is apparent the Mormon baptism is pretty central to them, there is this massive room with a massive font held up by 12 life-sized oxen. I wish a camera was allowed to take pictures, I can't put in words how massive and central this was. I call this the "anti-sacrament" because despite being like our Baptism, their baptism also plays a central role to them too, but the difference is we Baptize so that the infant will be saved and grow up in the faith and have the promise of eternal life; they baptize so that their dead will have a backup insurance plan. We have One Baptism for the forgiveness of sins, they have many baptism(s) for sins that belong to their ancestors and not their own. As a Chinese-American, this reminds me of ancestor-worship religion.
Four, their view of heaven is surprisingly "Lutheran"? When I ask an average Protestant what he thinks heaven will be like, he'll oftentimes list out an endless supply of earthly pleasures: foods, entertainment, feasts, etc. Maybe I've been reading too much Augustine and Aquinas, but I really do think that with heavenly and perfect contentment, the soul will be so fulfilled that these objects will still exist and be enjoyed in heaven, but no longer function as escape mechanisms that we use here on earth. I say this because there is this room in the Mormon temple called the "Celestial Room", which is supposedly meant to be a parallel of Mormon heaven. Interestingly, it was by far the most austere room in the temple. No paintings, no images, just plain white walls, and the least ornate room of all.
Five, I don't think Mormons being nice and smiling can simply be explained that they are just a pretending act just to attract more converts. It is definitely sincere, yes it is probably amplified by their social and cultural conditioning, but it's not possible that it's all fake.
Six, the Divinity of Jesus Christ as God is not something I was able to get a clear answer from the Mormons on, but I don't think it's correct to say that Mormons don't believe Jesus is God. They push back very hard on any claims that they don't believe Jesus is God, and after many clarifying questions the missionary finally responded saying that Jesus is God, but lesser than the Father. They also put so much emphasis on Jesus being the Son of God that it really seems to imply that they believe Jesus was a created by the Father. So I would say Mormons actually believe a hybrid between Subordinationism and Arianism. Of course any basic understanding of not dividing the Substance while also not confusing the Persons is totally thrown out the window, and the logical conclusion of that error is that they have to therefore believe in a totally different god.
To conclude, my head is spinning with all this new information that I've learned about the Mormon and LDS religion. I have a lot of LDS neighbors and now have a much better grasp of what is their religion. Hopefully as I think about some of these things deeper, I'll be able to develop some apologetics to better defend and articulate the truths of Confessional Lutheranism.