The earth contains billions of square miles...
The earth contains billions of square miles, each mile contains millions of cubic feet (for lack of proper arithmetic), and each part of the earth may become a place of thousands of events from the time of Prophet Moses ( as ) untill the Day of Judgement. Yet, Kaab claimed that all these events are recorded in the Old Testament. The parts of the Old Testament which were dictated or written by Prophet Moses ( as ), don't come to 400 pages.
Recording all the events of the World bewteen the time of Moses ( as ) till the day of Judgement, may take millions of pages. Furthermore, the pages of the Old Testament do not record future events. All they contains are some past events which took place during or before the time of the biblical Prophets. Considering these aspects, the claim that Kaab made belies itself. Ka'b al-Ahbar counts the days of the Caliph Umar This rabbi was able to deceive many companions through his trickery.
Ka'b's influence had grown during the days of Umar's caliphate to such a degree that he was able to say to Umar: Ka'b : Amir al-Mu'minin, you ought to write your will because you will die in three days. Umar : How do you know that ? Ka'b : I found it in the Book of God, the Taurat ( Old Testament ). Umar : By God do you find Umar Ibn al-Khattab in the Old Testament ? Ka'b : By God, no. But I found your description in the Old Testament and your time is coming to an end.
Umar : But I do not feel any pain or sickness On the following day Ka'b came to Umar and said : Amir al-Mu'minin, one day has passed and you have only two more days. The following day Ka'b came to him and said : Amir al-Mu'minin, two days have gone and you have only one day and one night remaining. The following morning Abu Lulu appeared carrying a dagger with two heads and a handle in the middle. He hit Umar six times, one of them hit the Caliph in the navel, killing him.
Sunni reference: Tabari - History of al-Tabari, v4, p191 Printed by Dar al-Maarif - Cairo Looking at the Old Testament, one does not find any names or predictions of Umar. Also no Rabbi other than Ka'b claimed that the Old Testament predicted the existence of Umar, his murder, or defined the time of his death. Had information of this kind been contained in the Tourat, the Jews would have been proud of it and would have used it in an attempt to prove that the Jewish religion is the right religion.