I feel compelled to go full Sunday School lesson here on a couple of Nick's points. Have a seat, class.
The Bible doesn't specifically say something is wrong at times, but rather shows the consequences of the action. For instance, Moses murders an Egyptian guard in a rage and has to flee Egypt. He was a prince and probably could've ordered the guy to stop mistreating the Israelite slaves, but it seems anger was a problem for Moses (see his ultimate failing in striking a rock for water rather than speaking to it, because he was mad, or him busting the original ten commandments). The Bible just shows that he had to flee Egypt and spend a long time in the wilderness after that. God took care of him and still used him to free Israel, as God works all things for good for those who love him and are called according to his purpose, but murdering a man in cold blood is no bueno.
Polygamy is a good example of that. Let's look at Nick talking about Abraham.
Abraham was originally known as Abram before God told him he'd make his descendants as plentiful as the stars in the sky or the sand on a beach. Abraham and his wife Sarah (originally named Sarai) were both advanced in years, and the idea of God turning them into a huge nation was pretty absurd. Sarah wasn't getting pregnant. So Abraham gets in his head that he'll help God out by marrying one of Sarah's servants named Hagar. Abraham and Hagar have as on named Ishmael.
Sarah immediately becomes very jealous of this arrangement and treats Hagar and Ishmael horribly. God intervenes, informs Abraham that he messed up royally, and says he needs to banish both of them. Abraham does. God does help Hagar live on her own and take care of Ishmael, but the damage is done. He declares that Ishmael will be at odds with his brothers for many generations. It's generally accepted that Ishmael's descendants are directly responsible for the creation of Islam and the many, many years of strife that has resulted from that.
Abraham's eventual son with Sarah was Isaac. Isaac only had one wife, Rebekah. But they had two boys, Esau and Jacob. Despite being younger, Jacob ended up being the one who carried on the family line. Fun fact about Esau, he's one of the few people in the Bible God directly says he wasn't a fan of (Malachi 1:3). Yikes. But anyway, Jacob steals Esau's birthright and blessing from Isaac through some shenanigans and has to run away for a long time. He ends up working for his mother's brother Laban. He falls in love with one of Laban's daughters, Rachel. Laban tells him he can marry her if he works for him for seven years. He does, has a wedding where he gets real liquored up. Wakes up in bed next to Rachel's older sister, Leah. Laban informs him that he kinda forgot to mention that the custom there is for the oldest daughter to be married off before the younger. He then offers Jacob another seven years of work in exchange for Rachel. Jacob, filled with the simp spirit, agrees. Seven years pass and he gets to marry Rachel.
The problem now is that Jacob treated Leah badly as he loved only Rachel. God takes pity on Leah and blesses her with children, while he keeps Rachel from having any. These are where the twelve tribes of Israel come from. Ten of which are Leah's children. The other two are Rachel's when God eventually allowed her to have children, Benjamin and Joseph. This is where things get murkier. Jacob treated Joseph and Benjamin a lot better than the children from Leah. This created further resentment, and ended in several of Joseph's children kidnapping Joseph and selling him into slavery. That's the whole Coat of Many Colors incident. God used that to save Israel, and quite a bit of the world, from a huge famine, but it was still all due to having multiple wives and preferential treatment.
Jumping ahead several centuries, we have Solomon who Nick also referenced. Solomon was the son of King David, 'a man after God's own heart' (Acts 13:22). David was a man who sought God in most everything, and when he screwed up - which he did, multiple times and bigly - he repented of his wickedness. Solomon was the king after David died. One of his first acts was to create a sacrifice to God so massive and impressive that God showed up to ask him what kind of blessing he'd like. Solomon asked humbly for the wisdom to lead his people. God was so impressed that he blessed Solomon with the most wisdom anyone in the world has ever had, and also with power and wealth. Israel thrived under Solomon's leadership.
But Solomon also decided to use his wisdom to try everything the world had to offer. Among the things he tried was having lots of marriages. He reportedly had about 1,000 wives and concubines together. His many wives all came from different cultures who worshipped different gods, so they led him astray. It was under Solomon's reign that the first cracks of faithful service to God began. Solomon became so disillusioned with his reckless pursuit of a hedonistic lifestyle, that the first part of Ecclesiastes, written by Solomon, is him lamenting the meaninglessness of life.
Fast forwarding to the New Testament, Paul wrote several things about marriage. For example, 1 Corinthians 7:2 and 1 Timothy 3:2. Both of those are pretty clear that man should 1: have a wife and 2: be faithful to her and her alone. I have a feeling Nick is of the (equally heretical) school of thought that the Apostle Paul's letters are just the writings of a man, and that they should be taken as such. It's often cited by people who dislike what he has to say, whether it be about sexual purity or women's role in the church. This is nonsense, as scripture is meant to be taken as the single divinely inspired word of God that tells the story of man's fall and redemption through Jesus Christ - and God's commandment to go and make believers of all the world.
tl;dr Nick's theology is dumb, a mess, and is easily picked apart by anyone who knows what they're talking about.
