Ryan:
You make some very bold statements. You yourself refer to Sinai and to Galatians. Yet Galatians 4.25 makes clear that your statement about Sinai is very inaccurate.
You need to look at the entire book to understand Galatians. Also understanding Paul was a Pharisee who never, ever taught contrary, against or advocated for a non observance of the Torah. Consider the following:
Acts 24:14 I believe everything that agrees with the Torah and that is written in the Prophets.
Acts 25:8 I have done nothing wrong against the Torah of the Jews or against the temple or against Caesar.
Romans 7:1 Do you not know, brothers - for I am speaking to men who know the Torah - that the Torah has authority over a man only as long as he lives?
Romans 3:31 Do we, then, nullify [destroy, abolish] the Torah by this faith? Not at all! Rather, we uphold [stand on, establish] the Torah.
Romans 15:4 For everything that was written in the past [The Torah and the Prophets] was written to teach us.
This doesn't sound like someone who disagreed with, or questioned the Sinai Covenant with the believers faith. To even prove he was not walking contrary to God's Torah, he and 4 others completed a Nazarite vow of which he paid the expenses. This included animal sacrifices as that is what a Nazirite vow consisted of. Acts 21:20-24, Numbers 6. Ever there was ever a time to back off and say "no way Jose" that stuff is history, that would have been the time. So he was either the biggest hypocrite this side of Christ, or he was the most Torah observant Jew since Christ. I am personally taking the latter option.
Galatians 4:21 – 23 "Tell me, ye that desire to be under the law, do ye not hear the law? For it is written that Abraham had two sons, the one by a bondmaid, the other by a freewoman. But he who was of the bondwoman was born after the flesh; but he of the freewoman was by promise;"
Under the law has been interpreted as one following the Law of Moses, and Israel or the Jews, being given it till something better came along. Namely Christ. But is that what this is saying? As in Galatians 3, he is using an allegory to make a point.
Abraham and Sarah began to lose their trust in God’s words and soon took it upon themselves to establish this promise by their own works and by their own ways. Abraham, in a scene similar to Adam in the garden, listens to his wife, does not trust God and produces a child, Ishmael, by means of a maid named Hagar. This son, because he was produced by works rather than trust, could not be Abraham’s heir, because he was not produced by relationship through trust, or by faith. The seed of faith was through Isaac because his birth was the result of Abraham and Sarah's trust in their 'Father' God, and so children of faith are produced by children of faith. Inheritance is not earned, but acquired by birth and given by promise.
Galatians 4:24–26 "Which things are an allegory; for these are the two covenants; the one from the Mount Sinai, bearing children for bondage. who is Hagar. For this Hagar is Mount Sinai in Arabia, and answereth to Jerusalem which now is, and is in bondage with her children. But Jerusalem which is above is free, which is the mother of us all."
What is thought of the two covenants that are spoken here has been taught as the Sinai Covenant and the New Covenant. But that is incorrect. The covenants spoken of here and in Galatians 3 is the Abrahamic and Sinai covenant. If the covenantal relationship of trust is established first, then obedience to the law given on Mount Sinai will distinguish you from all other peoples. If the Law of Moses is sought after without the relationship, then the natural result is bondage, because one is seeking righteousness outside of relationship. And it is not because the law itself is bondage, but because we fail to keep the law. THE LAW DID NOT DELIVER ISRAEL FROM EGYPT! The law was given after they were delivered, and after the trust-based relationship was established.
Hagar and Mount Sinai are synonymous to the Jerusalem that NOW IS. A cursory reading of the gospels will reveal that the Jerusalem of Jesus’ time was dominated by the Pharisees and Sadducees: two 'Jewish' sects that represented the very essence of what Mount Sinai without relationship produces. The basis for being a citizen of the 'kingdom of heaven' was no longer rooted in the redeeming blood of the sacrifice, but rather strict adherence to the 'rabbinical' view of the law, legalism. (119 Ministries)
And the Jerusalem from above is spoken of in Hebrews 12:22-23 "But ye are come unto Mount Zion, and unto the city of the living God, the HEAVENLY JERUSALEM, and to an innumerable company of angels, to the general assembly and church of the first-born, having been written in heaven, and to God, the Judge of all, and to the spirits of just men made perfect. . ."