Judaism is NOT the religion of the Old Testament. The religion of the Israelites in the Old Testament was/is Christianity! Jesus, Himself, said so.
“You search the Scriptures; for in them you think you have eternal life; but they are they which testify of Me. John 5:39
The only Scriptures that were available when Jesus was on earth were the Old Testament Scriptures, which is what Jesus was clearly referring to. Jesus was stating that the Old Testament Scriptures were about Christ – NOT about Israel.
There are literally dozens of prophecies in the Old Testament pointing towards the coming of the Messiah, Jesus Christ. These prophecies were given to the Israelites by God so the Israelites would recognize Jesus when He came to earth.
Jesus Is the Messiah, Matthew 1:16. Rothschilds "Israel" State is spiritually called Sodom in Revelation 11:8.