Why does Les use Deuteronomy 29 when discussing the revelations given to the Apostle Paul?

Les explains that Deuteronomy 29 says it all with regard to the revelations of the Apostle Paul. Paul claims these things were kept secret and were revealed to him and him alone from the Ascended Christ. Les notes that the other word for mystery is secret; it has been kept secret. He uses Deuteronomy 29 over and over because it summarizes this. He also clarifies he is not taking away what Jesus said on earth, but what Christ said from His Ascended Place in Glory carries more weight for us today than what He said to the Jew under the Law. Everything Christ says from the Ascended Place in Glory is through the Apostle Paul. This supports why Deuteronomy 29 is so central when discussing Paul's revelations.