The more you study the Bible, the more you are able to see great over-arching themes. The basis for believing Jesus is the Messiah is not simply a few proof texts, rather it is based upon the whole Hebrew Bible. The coming of Messiah is central to God's plan of restoring a people for himself from Mankind's Fall (into sin and disobedience). Rabbinic legend speaks of Messiah waiting in the Garden of Eden, which will be restored when he comes. There is a indeed great theological insight in that legend! The restoration of mankind from the Fall is bound up with Messiah's coming. Messiah's redemption must involve restoration of all the benefits man had at Creation. There is only one sort of Messiah who fits this description, the one spoken in the New Covenant Scriptures in fulfillment of the Old! See for yourself. (You can download this in chart form here.)
Creation: What mankind had: life in the Garden under blessing. (Land & Seed under blessing)
Fall: What mankind lost: the blessing replaced by the curse. (Land and Seed under curse)
Redemption in Tenach (OT): What was to be regained, often as represented as a promise or type: (Land and Seed begin restoration)
Full Blessing (Restored through New Adam, Rom. 5:12-19; 1 Cor. 15:22)
Relationship with God restored (Sonship, Temple of the H.S., Word)
Progress of the Covenant of Grace:
God had a covenant with Adam at Creation which was broken. He established a Covenant of Grace with Adam which is administered in different ways until it's final expression in the Messiah, the "Second Adam." We experience the covenant blessings spiritually now, in complete fullness when Messiah returns.