John Gill Commentary 1 Kings 16:25

"And Omri did that which was evil in the sight of Jehovah, and dealt wickedly above all that were before him." — 1 Kings 16:25 (ASV)

But Omri did evil in the eyes of the Lord
Openly and publicly, as if it were in defiance of him:

and did worse than all that were before him ;
taking no warning by the judgments inflicted on them, which aggravated his sins; and besides, he not only worshipped the calves, as the rest, and drew Israel into the same by his example, but he published edicts and decrees, obliging them to worship them, and forbidding them to go to Jerusalem, called "the statutes of Omri", (Micah 6:16) .