1 Kings 16:24-26

24He bought the hill of Samaria from Shemer for two talents of silver and built a city on the hill, calling it Samaria, after Shemer, the name of the former owner of the hill.

25But Omri did evil in the eyes of the Lord and sinned more than all those before him.

26He followed completely the ways of Jeroboam son of Nebat, committing the same sin Jeroboam had caused Israel to commit, so that they aroused the anger of the Lord, the God of Israel, by their worthless idols.