Israel's kings instruct us about the greater king who was to come.
The kings of Judah typologically point to the perfect king and fulfillment of the Davidic Covenant, Jesus Christ.
Israel's kings were bent on idolatrous rebellion instead of living in and enjoying the new paradise they've been given.
The antithesis between the people of God and pagan culture is epitomized in the face-off between Elijah and Ahab.
King Solomon was a 2nd Adam figure given the task to build God's house and the possibility of merited prosperity and blessing.