Malachi is the last book of the Old Testament and belongs to the period of Nehemiah. The prophets message is to the priests and the people, charging them with indifference, doubt, and immorality. Malachi tells of the coming day of the Lord and closes the book with a prophecy of John the Baptist.

Malachi 2

2:17 Ye have wearied the LORD with your words. Yet ye say, Wherein have we wearied him? When ye say, Every one that doeth evil is good in the sight of the LORD, and he delighteth in them; or, Where is the God of judgment?