The answer is: Burned his house down while still inside it

1 Ki 16:18

King Zimri’s tragic end is quite the dramatic narrative. Picture the scene: feeling cornered after just a week of ruling as Israel's king, Zimri found himself on the run from Fort Zaret), as the larger, powerful forces of Omri sought vengeance. In a desperate act, he chose to set his royal residence ablaze, locking himself inside. This shocking decision not only highlights the deep political intrigues of ancient Israel but also gives audiences a view into the grittier side of leadership where the stakes could not be higher.

Did you know that Zimri is one of the less-acknowledged figures in the Biblical roster? His rule lasted only a mere seven days, making him not just a king, but a symbol of unpredictability in leadership. The timeframe shows how volatile the landscape was during the divided monarchy—a time filled with brief reigns and intense strife. His story is a reminder of the famous adage: "It's a dangerous game."

Additionally, the fire represents both destruction and the devastating impact of unchecked ambition. You might recall King Solomon, whose lust for wisdom and power led him to great heights yet taught us through trial as well. Zimri’s fate stands as a stark reminder: destiny can flip unexpectedly, highlighting the importance of humility and sound decision-making in leadership, qualities that might prevent self-destruction offered through ancient paradigm shifts.