Tumah, you're quite right. Without the spirit of God to enlighten their darkness, people would not have been able to see Jesus in the scriptures of the Tanach. This MYSTERY, as it is called in the New Testament, is spoken about by saint Paul. He says, 'Now to him that is able to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began, But is now made manifest, and by the scriptures of the prophets, according to commandment of the everlasting God, made known to all nations for the obedience of faith:' (Romans 16:25, 26)
Elsewhere, we are told that the reason for keeping the mystery a secret was to outwit 'the princes of this world' (1 Corinthians 2: 7,8).
Jesus Christ was the light of the world, and one thing he illuminated was the prophecy of the Tanach. It says in Luke 24: 27, 'And beginning at Moses and all the prophets, he expounded unto them in all the scriptures the things concerning himself.'
As regards the word BRANCH, I suggest you look specifically at the word TSEMACH. What does this mean to you? The word has only five usages in the Tanach, and each is very significant to the person of Jesus Christ.