The LORD separated the tribe of Levi, to bear the ark of the covenant of the LORD (2Sam 6)

In chapter 6, David decides that it's time to send for the ark and bring it to Jerusalem. This prompts a question of timing of this event, about which I have already given an opinion.

Now, the manner in which this happens is important. As the Philistines did when they had the ark and wanted to get rid of it, the Israelites get a new cart, load it up, and bring it along. This is a problem. When the ark is to be moved, the proper method of transport is supposed to be having it carried on foot by Levites. The Philistines, between the fact of their being (relatively) ignorant pagans and perhaps the more important fact of them not having Levites were able to get away with loading the thing on a cart. For the Israelites, handling the ark of God in such a cavalier manner led to God's wrath striking down Uzzah.

Where exactly was it that Uzzah was struck down? I don't see this as a problem the way the SAB does. While we are given two names for the location of this event, the fact that this account and the one in 1Chronicles 13 were written far apart in time may mean that the place was known differently at the later date. Childon was probably a descendant of Nachon, and both of them at various times owned a threshing floor at the place called Perezuzzah. (Edited to add that the name "Perezuzzah" was clearly a name given to the place because Uzzah was struck down there, so the name came after the incident.)

So eventually, they seem to get it figured out, and they transport the ark on foot, making sacrifices to God along the way. David comes along with the procession, dancing as it goes. Now, I'll admit that what's going on here is not completely clear, but I don't agree with the SAB's reading, neither that there might have been something wrong with David dancing, nor that David was somehow nude. Note that it does not say that David was naked, but rather that he was clothed in an ephod, which was a priestly garment. I think Michal was simply, for some reason, feeling that David was making a fool of himself by the way he was acting, which she felt was improper for a king. David's reply is that he doesn't care what people think, he just loves God.

Now the final note of this chapter says that Michal "had no child unto the day of her death." The SAB makes a surprising evaluation of this fact, calling it a contradiction (which I don't think it is, more in a moment) but not marking it with "Injustice" or "Women", which I probably would have. The Bible seems to be suggesting that Michal was made infertile as a punishment for arguing with her husband, which seems a bit extreme to me, but maybe there's something to this story I'm missing. (It might be that David simply never had sex with her again.) As for the contradiction, I assume that the children that Michal is reported to have had were all born before this incident.

Now these were the sons of David (2Sam 3)

In chapter 3, David gets busy being king and having lots of kids. David has six sons, each by a different wife, and for some reason the retelling of David's family in 1Chronicles 3 gives one name different. It might be a nickname or something like that, but I really have no idea what the story is here.

A really strange story here is the story of Abner and his turning his allegiances to David. Apparently, Abner sleeps with one of Saul's concubines, which worries Ishbosheth (as I think I mentioned elsewhere, it was apparently a custom of the day for a king who conquered another to sleep with the defeated king's concubines to show he is taking the old king's place), and Ishbosheth asks what's going on. Abner flips out and goes over to David's side. (One might wonder if Abner sensed he was on the losing side, and wanted to switch to keep what power he had as a military leader.)

David tells Ishbosheth that he wants his wife Michal back, and Ishbosheth retrieves her. Her new husband Phaltiel is clearly very unhappy about this, but is unable to do anything about it. We're never told whether David did this out of love or out of a sort of display of authority, but we were told earlier that Michal did love David, and perhaps she still does. Something that the SAB does not note here is the fact that a man whose ex-wife has remarried is not allowed to take her back (Deuteronomy 24:4). Since there doesn't seem to have been a formal divorce in this case, it's not clear whether David might be breaking the law in this case.

Now, when David tries to make peace with Abner, Joab hears about it and is very displeased. He goes behind David's back and kills Abner in revenge for the killing of his brother Asahel. David denounces Joab's actions and pronounces a curse on Joab's house. Now whether or not David was right to give this curse (and whether it was really meaningful) is a matter of opinion, but I think I can see David's motivation for being angry with Joab. After all, Abner was offering a chance at peace and a (relatively) bloodless uniting of the kingdom of Israel under David, and Joab messed it up.