Galatians 4:26 But Jerusalem which is above is free, which is the mother of us all.
In Galatians 4:25 Paul allegorically showed Agar as “mount Sinai” in Arabia, where the law was given to Moses.She being the bondservent and not the free woman represents the law with it bondage and without the promise. Today verse allegorically deals with Sarah who represents Jerusalem and the promise. Jerusalem is from above; that being God established the law on mount Sinai in Arabia , but the promise in Jerusalem thus make her the mother of us all, not just Jews but also Gentiles. This Sarah was a type and figure of; the Gospel church under the administration of the new covenant; this being relevent to Paul’s days, as the church in it infancy is the result of the promise made century’s ago. Spiritually we are all connected to Abraham , to whom the promise was given. What a rich heritage we have as born again believers. Helps us to understand the election of God to the praise and riches of His Glory. These passages destroy the false premise of salvation by works. If works could save God would have given them in Jerusalem but instead He gave them on mount Sinai outside of Jerusalem. All that pertain to salvation and freedom is of Jerusalem. All this by the mercy of god, in that we being depraved and dead in sin,God would have been just and left us to fulfill the law of the first covenant. We would have not only failed we would have gone deeper into sin.
“We are now free; from the servitude of sin, Satan, and the world, from the yoke of the law, and from a spirit of bondage; having the Spirit of God, the spirit of adoption, who is a free spirit, and makes such free that enjoy him; and where he is, there is true liberty. He adds, which is the mother of us all; that are born again, whether Jews or Gentiles, as particularly the church at Jerusalem was, and the Gospel church in general may be said to be; since here souls are born and brought forth to Christ, are nursed up at her side, and nourished with her breasts of consolation, the word and ordinances”. (John Gill)