Mr. Dispy wrote: I am still waiting for you or another covenanter to provide a reference to God's people in the OT being "in Him" or "in Christ Jesus."
They who are blind who will not see!
Your preconceived ideology prevents you from seeing the ONE Covenant which GOD has made with all HIS Elect.
The OT is as much about Jesus as the NT is. 24 "Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith. 28 There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus. 29 And if ye be Christ's, then are ye Abraham's seed, and heirs according to the promise"
6 "For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counseller, The mighty God, The everlasting Father, The Prince of Peace. 7 Of the increase of his government and peace there shall be no end, upon the throne of David, and upon his kingdom, to order it, and to establish it with judgment and with justice from henceforth even for ever. The zeal of the LORD of hosts will perform this.