1 Kings 16:18

And it came to pass, when Zimri saw that the city was taken, that he went into the palace of the king’s house, and burnt the king’s house over him with fire, and died,

Cross-reference

1 Samuel 31:4 describes Saul's suicide by sword to avoid capture—a direct parallel to Zimri burning the palace to die rather than be taken.

1 Chronicles 10:4 recounts Saul falling on his sword — another king's suicide in defeat, paralleling Zimri burning the palace over himself.

Acts 16:27 shows a jailer about to kill himself but stopped by Paul — contrasts with Zimri's completed suicide. A near suicide with a different outcome.