The thirty-first year of Asa: See the comments on verse 21.

Reigned for twelve years: The text does not clearly state whether the twelve years include the four years that Omri ruled during the civil war (see verse 21), but most likely that is the intended meaning.

Six years he reigned in Tirzah: Regarding Tirzah, see the comments on 1 Kgs 14.17. Since this is the first mention of Tirzah in this section, it may be identified as the capital city. Omri later moved the capital from Tirzah to Samaria, so Good News Translation says that he ruled in Tirzah “The first six years” (similarly Contemporary English Version). This may serve as a good model for other languages since a more literal rendering might be misunderstood.

Quoted with permission from Omanson, Roger L. and Ellington, John E. A Handbook on 1-2 Kings, Volume 1. (UBS Helps for Translators). New York: UBS, 2008. For this and other handbooks for translators see here .