Adam Clarke on 1 Kings 16:25

Did worse than all - before him - Omri was,

1. An idolater in principle;

2. An idolater in practice;

3. He led the people to idolatry by precept and example; and, which was that in which he did worse than all before him,

4. He made statutes in favor of idolatry, and obliged the people by law to commit it. See Mic 6:16, where this seems to be intended: For the statutes of Omri are kept, and all the works of the house of Ahab.