Heavenly Mother Jerusalem

Heavenly Mother Jerusalem
We have studied that there exist a God the Father, and His children, in the heavenly family. Then, who is left? It's Mother.
Gal. 4:25-26 『Now Hagar stands for Mount Sinai in Arabia and corresponds to the present city of Jerusalem, because she is in slavery with her children. But the Jerusalem that is above is free, and she is our mother.』
In this verse we can find the words "our mother." "Our" refers to the children who believe in God. This verse reveals that there exists a heavenly Mother to the children who will be saved.
So far, we've studied about which members compose a family, and we have confirmed that we have a spiritual family in heaven. Just as we have fathers, brothers, sisters, and mothers in our physical families, we have our spiritual Father, brothers, sisters, and spiritual Mother in our spiritual family.