"You search the Scriptures, because you think that in them you have eternal life; and these are they which testify about me.
There are one-third of one thousand (!) specific promises in the Old Testament pointing to the unerring identification of Jesus of Nazareth as the Christ of glory; but these searchers (!) disbelieved, perverted, and rejected the last one of them.  In spite of that, the Old Testament still bears witness of Jesus Christ across centuries and millenniums of time; and those Old Testament Scriptures are far more than enough to convince any unbiased person who will take the trouble to know them, that Jesus Christ is indeed the Christ and Saviour of all the world.