The answer from Almighty God’s word:

     “… it is nothing more than a historical record of God’s work, and a testament to the previous two stages of God’s work, and offers you no understanding of the aims of God’s work. Everyone who has read the Bible knows that it documents the two stages of God’s work during the Age of Law and the Age of Grace. The Old Testament chronicles the history of Israel and Jehovah’s work from the time of creation until the end of the Age of Law……”