you are correct, but the OT Jews did not understand this until Jesus and Apostles brought forth new doctrines.
was John 1 taught in the OT?
and the Word became flesh and dwelt among us.
NEW DOCTRINE
Wrong again!
Isaiah 7:14
Therefore the Lord himself will give you a sign: The virgin will conceive and give birth to a son, and will call him Immanuel.[God with us]
Isaiah 9:6-7
For to us a child is born, to us a son is given, and the government will be on his shoulders. And he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace. Of the greatness of his government and peace there will be no end. He will reign on David’s throne and over his kingdom, establishing and upholding it with justice and righteousness from that time on and forever.
Are you playing Twenty Questions game again? You SHOULD know, as Rnmomof7 has stated, that Jesus himself said that Moses and the Prophets spoke of him. Now, if you are talking of NEW revelation such as Christ revealed to Paul about the Holy Spirit indwelling a believer (Christ in you, the hope of glory) and NOT LEAVE, then you would be correct. Paul also spoke of other mysteries that were not known beforehand.