Matthew Poole and continuators on Galatians 4:26

26 But Jerusalem which is above, is free , which is the mother of us all .

The new Covenant, or the dispensation of the Gospel, or the Christian Church, which is above, or from above, which answereth to Sarah, and is said to be above, because revealed from Heaven by Christ, sent out of the bosom of the Father, not as the Law was revealed upon Earth, upon Mount Sinai. Hence Apostates from the Doctrine of the Gospel, are said to turn from him who speaketh from Heaven, Heb. 12.25. Or else it is said to be above, because it is the assembly of the first born written in Heaven, ver. 23. hence the Gospel Church is called the Heavenly Hierusalem, ver. 22. Of this Gospel Church the Apostle saith, that it is free, i. e. free from the yoke and bondage of the Ceremonial Law, or from the Covenant and curse of the Law.

Which Church he saith is the Mother of all Believers, they imbracing the same Faith, and walking in the same steps, from whence was easie for the Galatians to conclude, their freedom and liberty also from the Law.

Marginal references: Isa. 2.2. Heb. 12.22. Rev. 3.12. & 21.2, 10.