klutedavid and Soyeong, I'd like to respond to you both.
klutedavid said:
Any Jew who is not circumcised has broken the law, Jews are bound by the letter of the law.
Incorrect. Since circumstances vary, the letter of the law has never governed anyone in a justice-based society. The MEANING of the written words (what Soyeong calls the spirit or INTENT of the law) is the actual law. That meaning is always love, and thus the law itself is never changed nor abrogated.
Example. The 10 commandments advise to work six days. What about a Jew 102 years old and handicapped? What about infants? Obey the LETTER of the law? Hardly, because circumstancs vary. The Spirit's leadings guide us in our varying circumstances - here too is Soyeong correct. This is the only sure way to fulfill the law.
Admittedly many NT passages SEEM to abrogate the Mosaic law, but that's only because, due to changes in historic circumstances, some of the Mosaic LETTER, and many man-made Jewish laws, were contradicting the Spirit's guidance/leadings. But we're still under Mosaic law (love).
Here's where I disagree with both of you. There isn't a new covenant or a new economy of any kind. Nothing has changed across the testaments. In fact Galatians is insisting, particularly in chapter 3, that both OT and NT saints:
(1) must follow the Spirit's leadings
(2) are sanctified by doing so
(3) are all under the Abrahamic covenant.
For example the law did not originate on stone but was voiced by God to all Israel (Ex 20) - this too is just the leading of the Spirit, for 'My sheep know my voice.'
Galatians 3:15 and 3:17 insist that the Abrahamic Promise/Covenant is INVIOLABLE. Its terms do not change. Even the Mosaic law-covenant, introduced 430 years later, did not interrupt or alter the Abrahamic covenant (Gal 3:17).
Each subsequent covenant - each (allegedly) 'new' covenant - is actually the Abrahamic Covenant/Promise freshly ARTICULATING its own blessings, commands, and promises. Both Israel's old covenant, and her 'new' covenant, are just manifestations of the Abrahamic Promise/Covenant working behind the scenes.
The logical underpinning of my position (aside from the seemingly clear teaching of Galatians 3) is that the cross is retroactive. Since NT saints don't get a better cross than OT saints, they don't get a better - nor even a different - relationship/covenant with God. Based on this logic, the ONE unchanging covenant is termed the Covenant of Grace (or 'Covenant Theology') in the Reformed tradition, and rightly so.