Smote him there under the fifth rib, that he died (2Sam 4)

In chapter 4, we learn of the odd story of how Ishbosheth becomes worried and weakened when he hears that Abner is dead, and so two of his captains come into his house when he's resting in the middle of the day, and they kill him. They take his head and bring it to David, which really seems like an obviously stupid thing to do given the way David has reacted so far to people who take it in their heads to commit violence to help him. Indeed, David reminds these guys of the fate of the Amelekite who killed Saul, and then orders them killed and their bodies mutilated. As I said before, David is probably in part motivated by setting a precedent that regicide will not go unpunished in Israel.

So long as I didn't already comment on it, and this post is so small, the phrase "under the fifth rib" is, I imagine, a Bible-ism for "in the heart".

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.

And all his house died together (2Sam 2)

So in chapter 2, David finally becomes king officially. However, at apparently around the same time, Abner decides to declare Saul's son Ishbosheth the king. No doubt Abner, being a close relative of Saul, would prefer to keep the monarchy in the family.

This does present a problem for the SAB though, in that according to 1Chronicles 10, "all [Saul's] house died together" during the battle that saw the death of Saul. One of the things that can be said in reply to this is that it may not be clear what comprises Saul's "house". It's well established elsewhere that at least one of Saul's grandchildren is alive, and as I just said above, Abner is a relative of Saul. One might consider the idea that his "house" is his royal line, but even that is problematic, as Ishbosheth not only survives, but briefly sits on the throne. It might also be that Saul's "house" refers to men in his family of the proper age to fight in wars, but since Ishbosheth is somewhere around forty years old when Saul dies, this seems highly unlikely. While one can also sometimes find some ambiguity in the word "together", I don't think that's going to suffice here either, as clearly Isbosheth lives at least two years after Saul's death. The only real room for ambiguity in the language here that I can see is in the word "son", which as has been mentioned several times is a much more fluid word in Hebrew, capable of referring to any descendant. If Ishbosheth was Saul's grandson, perhaps there is no contradiction, but there's really no indicator of such an idea other than the fact that it might solve this issue, and that Ishbosheth doesn't seem to ever be mentioned until this point. In short, I don't know what to make of the claim of 1Chronicles 10:6.

A strange story follows. The armies of David and Ishbosheth meet together in Gibeon, and Abner suggests "Let the young men now arise, and play before us." The play turns out to be lethal, and in short order, twenty-four men are dead. Is this a "cruel game" as the SAB says? Maybe. The way it sounds to me is that the idea was to have a relatively non-violent wrestling match, and it turned sour, as every single one of the men was set on treachery against their opponent. Indeed, this is a violent event, and one that doesn't make much sense, especially since there are no formally declared hostilities between these two armies.

The next notable event in the plot is Abner's killing of Asahel, the brother of Joab. This seems to be clearly a case of self-defense, as well as a killing in the midst of battle, and yet Joab later seeks revenge for this act. Once all the fighting is done on this particular day, Ishbosheth's soldiers lose 360 men, while David loses only 20.