Scripture diving, like dumpster diving, is not a virtue, but pure vanity, and in any case hardly fair when you remain disadvantaged, several books short of what you proclaim.
God is not a covenant breaker and all is binding and eternal. Simply, the Church fulfills the role of Israel as Jesus fulfilled the Law. Israel and the Law failed God. The Church through the great Sacrifice is greater than Israel, is Christ’s mystical body on earth having the Law fulfilled in Christ. The Law is not done away with—it is the Ten Commandments. Israel is not done away with—it remains a nation whose people are free to come into the new Covenant, the new Israel, the Church.
I do sweat my Salvation, every day failing, contrary to those who remain presumptuous, shouting, “ Lord, Lord, but I have cast out demons in your name “. I recall our Lord’s reply to that daily.
By the way, the Lord does not pull His salvation out from under us. You and I do that.
Your interest in “John Darby” is meaningless as I’ve never heard of him. Scripture is truth. It is not chopped liver. As fast as the revisions come and language changes it is you relying on the “new material”. I recommend you get off the broad road and force an interest in the “old material”, prior to the 1600’s, 1800’s, etc.
Where’s the Scripture that contradicts the Abrahamic Covenant?