Crucial to understanding what law is no longer in effect and what law is in effect under the New Covenant is correctly identifying the added law of Galatians 3:17 & 19 - that is, the Mosaic *Covenant* and all laws unique to that Covenant.
Thus, the law that existed prior to Mt. Sinai is one and the same as the law still in effect under the New Covenant.
Because Yahweh's morality doesn't change, neither does His triune and integral moral law (the Ten Commandments and their respective statutes and civil judgments) reflecting His morality. It's this law that has always been in existence and will always be in existence.
In other words, the Ten Commandments and their respective statutes and judgments did *not* come into existence at Mt. Sinai and thus were not eliminated under the New Covenant. There is a plethora of scriptural evidence revealing the Bible's triune law's prior existence to Mt. Sinai's added *Covenant.* For example:
"Abraham obeyed my voice, and kept my charge, my commandments, my statutes, and my laws." (Genesis 26:5)
It is sad that you do not understand the word "gentile". It simply means "nations". Paul was preaching to the cast-off House of Israel who had scattered far and wide after the Assyrian capture and to whom the promise that they would be redeemed, meaning to be bought back, was made. Other ethnicities had no reason to be "bought back" as they had not been cast-off. As throughout the Word, God was speaking to his "peculiar treasure" Israel (both houses). Just as in the old covenant days, peoples of different ethnicities could, and did, join themselves to Israel. So it is true today.
Crucial to understanding what law is no longer in effect and what law is in effect under the New Covenant is correctly identifying the added law of Galatians 3:17 & 19 - that is, the Mosaic *Covenant* and all laws unique to that Covenant.
Thus, the law that existed prior to Mt. Sinai is one and the same as the law still in effect under the New Covenant.
Because Yahweh's morality doesn't change, neither does His triune and integral moral law (the Ten Commandments and their respective statutes and civil judgments) reflecting His morality. It's this law that has always been in existence and will always be in existence.
In other words, the Ten Commandments and their respective statutes and judgments did *not* come into existence at Mt. Sinai and thus were not eliminated under the New Covenant. There is a plethora of scriptural evidence revealing the Bible's triune law's prior existence to Mt. Sinai's added *Covenant.* For example:
"Abraham obeyed my voice, and kept my charge, my commandments, my statutes, and my laws." (Genesis 26:5)
For more, see free online book "Law & Kingdom: Their Relevance Under the New Covenant" at https://www.bibleversusconstitution.org/law-kingdomFrame.html
See also Parts 12 & 13 of my expository series on Galatians at https://www.bibleversusconstitution.org/tapelist.html#T1238
It is sad that you do not understand the word "gentile". It simply means "nations". Paul was preaching to the cast-off House of Israel who had scattered far and wide after the Assyrian capture and to whom the promise that they would be redeemed, meaning to be bought back, was made. Other ethnicities had no reason to be "bought back" as they had not been cast-off. As throughout the Word, God was speaking to his "peculiar treasure" Israel (both houses). Just as in the old covenant days, peoples of different ethnicities could, and did, join themselves to Israel. So it is true today.