Interesting that in verse 7, the example he uses of an unrighteous king pretty much parallels what happened to the Nephites in the Land of Nephi under king Noah. Couldn't have been many years since the people of Limhi had come to join Zarahemla, anyway. I've never thought of that before.
Verse 13 is always a fun one. It's great to know that having a "kingdom" is really the way to go, but the king has to, "establish the laws of God, and judge this people according to his commandments
". Otherwise, there's too much chance of D&C 121
coming into effect, and thus turning the whole kingdom to sin and wickedness.
Interesting chapter to be reading days before the election of the next President of the U.S.A.
Also, I found it interesting that Alma was referred to as the person who founded the church within Zarahemla. I could have swore the church existed in the city before Alma...? (last verse)