Malachi 2:11

2:11 Judah has become disloyal, and unspeakable sins have been committed in Israel and Jerusalem. For Judah has profaned the holy things that the Lord loves and has turned to a foreign god!

Malachi 3:14

3:14 You have said, ‘It is useless to serve God. How have we been helped by keeping his requirements and going about like mourners before the Lord who rules over all?