1 Kings 16:23

In the thirty and first year of Asa king of Judah reigned hath Omri over Israel twelve years; in Tirzah he hath reigned six years,

1 Kings 15:21

and it cometh to pass at Baasha's hearing, that he ceaseth from building Ramah, and dwelleth in Tirzah.

1 Kings 16:8

In the twenty and sixth year of Asa king of Judah reigned hath Elah son of Baasha over Israel in Tirzah, two years;

1 Kings 16:29

And Ahab son of Omri hath reigned over Israel in the thirty and eighth year of Asa king of Judah, and Ahab son of Omri reigneth over Israel in Samaria twenty and two years,

2 Chronicles 22:2

A son of twenty and two years is Ahaziah in his reigning, and one year he hath reigned in Jerusalem, and the name of his mother is Athaliah daughter of Omri;

Treasury of Scripture Knowledge

Summary

In the thirty and first year of Asa king of Judah began Omri to reign over Israel, twelve years: six years reigned he in Tirzah.

The thirty

Twelve years

Bible References

The thirty

2 Chronicles 22:2
A son of twenty and two years is Ahaziah in his reigning, and one year he hath reigned in Jerusalem, and the name of his mother is Athaliah daughter of Omri;

Twelve years

1 Kings 16:8
In the twenty and sixth year of Asa king of Judah reigned hath Elah son of Baasha over Israel in Tirzah, two years;