Kings III 16:21

21 Then the people of Israel divides; half the people goes after Thamni the son of Gonath to make him king; and half the people goes after Ambri.

Kings III 16:21 In-Context

19 Because of his sins which he committed, doing that which was evil in the sight of the Lord, so as to walk in the way of Jeroboam the son of Nabat, and in his sins wherein he caused Israel to sin.
20 And the rest of the history of Zambri, and his conspiracies wherein he conspired, behold, are not these written in the book of the chronicles of the kings of Israel?
21 Then the people of Israel divides; half the people goes after Thamni the son of Gonath to make him king; and half the people goes after Ambri.
22 The people that followed Ambri overpowered the people that followed Thamni son of Gonath; and Thamni died and Joram his brother at that time, and Ambri reigned after Thamni.
23 In the thirty-first year of king Asa, Ambri begins to reign over Israel twelve years: he reigns six years in Thersa.

The Brenton translation of the Septuagint is in the public domain.