The spiritual Zion was established by Jesus, Christ Ahnsahnghong

The world mission society church of God [WMSCOG] keeps the feasts of the new covenant that Christ Ahnsahnghong nim and God the Mother restored

The spiritual Zion is the dwelling place of God for ever and ever.
It is the place where the blessing of eternal life is given to the people who are destined to die.

(Ps 132:13~14)  For the LORD has chosen Zion, he has desired it for his dwelling: 
"This is my resting place for ever and ever; here I will sit enthroned, for I have desired it- 

(PS 133:3)  It is as if the dew of Hermon were falling on Mount Zion. For there the LORD bestows his blessing, even life forevermore. 

Eternal life was the blessing which could be granted only when Jesus came (Jn 10:10). 
The words, " People receive eternal life in Zion," were a prophecy that Jesus would come to this earth  and establish the spiritual Zion. 
Therefore, we must go to Zion if we want to meet God and receive the blessing of eternal life in the time of the New Testament. The prophet Isaiah prophesied that the spiritual Zion where God dwells and where the forgiveness of sins is given is the place when the feasts are celebrated.

(Isa 33:20~24)    There the LORD will be our Mighty One. It will be like a place of broad rivers and streams. No galley with oars will ride them, no mighty ship will sail them. 
For the LORD is our judge, the LORD is our lawgiver, the LORD is our king; it is he who will save us. 
Your rigging hangs loose: The mast is not held secure, the sail is not spread. Then an abundance of spoils will be divided and even the lame will carry off plunder. 
No one living in Zion will say, "I am ill"; and the sins of those who dwell there will be forgiven. 

The aforementioned Zion refers to the same spiritual Zion which Christ, who comes as King David, establishes and dwells in and reigns over as it is prophesied in the book of Psalms. 

Zion is described as the place where the feasts are celebrated, which means that Jesus as King David establishes the church that keeps the feasts of God. 

In actuality, Jesus established the feasts of the new covenant for our salvation.