22 But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, to an innumerable company of angels, 23 to the general assembly and church of the firstborn who are registered in heaven, to God the Judge of all, to the spirits of just men made perfect, 24 to Jesus the Mediator of the new covenant, and to the blood of sprinkling that speaks better things than that of Abel. (Hebrews 12:22-24)
Oh, how those who predict the physical city of Jerusalem to be the Mount from which Christ will reign one day have missed the mark! Their entire view of Old Testament prophetic language is skewed and misused as they fail to grasp that the church fulfills God's promise of a great Messianic kingdom (Eph. 3:10-11). Our passage is very clear. "You have come to Mount Zion" is perfect tense (completed action in the past, with present results) - it is not future tense. Jehovah God has already set His king on His holy hill of Zion in that He raised Jesus from the dead and crowned Him at His right hand of power (Psa. 2:6-7; Acts 13:32-39; 2:32-36; Eph. 1:20-23).
There is no greater privilege for sinners who have been saved by Christ's blood than to be "registered in heaven" (counted among God's faithful). God wants you to be counted among the saved. Trust the word of Christ and do what He says: "He who believes and is baptized will be saved; but he who does not believe will be condemned" (Mark 16:16).