Helpful discussion brothers, as a new pastor, understanding biblical covenants has been one of my steepest theological learning curves. Regards how the Abrahamic, Mosaic and Davidic relate to one another, I find the below helpful. Pg. 97 of Renihan (Mystert of Christ) states "As a covenantal foundation (speaking of the Abrahamic Covenant), we find that in the scriptures subsequent covenants are made with the same parties (Abraham's offspring) in the same kingdom-realm (Canaan) with the same promises (blessed life in Canaan) and with the same precepts (positive laws) and the same penalities (disinheritance). Therefore, what is commonly known as the Old Covenant began with Abraham and ought to be viewed collectively in such a way that the Old Covenant includes the Abrahamic , the Mosaic Covenant, and the Davidic Covenant." I think this helps remove the confusion of how those 3 covenants relate, and when we see 'Old Covenant' in the NT refering to the Mosaic Covenant (the most extensive of the 3), I take it that it essentially captures all 3 since all 3 were made to the Kingdom of Israel.

Thanks, brothers! Appreciate the insights on this. I was just doing some research on communion and the New Covenant's connections to church unity. Lord bless!

“The mosaic covenant needs to be set in its covenantal and redemptive historical context.” It isn’t simply that the old covenant “failed to work” but a necessary means to highlight and showcase God’s redemptive plan through Christ. Without the law and our failure to obey God through the law, the new covenant wouldn’t be a major highlight. Christ’s atoning work is seemingly less sufficient at first sight, if so. But because of the law and the mosaic covenant, our eyes are now open to see God’s amazing grace, and his wonderful salvation.

amazing teaching and sharing 👏🏽

Good discussion. I think something that would help with what they were trying to articulate is recognizing that God made different promises to Abraham. One promise pertained to his numerous carnal offspring. The other pertained to his single offspring, the Messiah. The first promise of the the land was to his numerous offspring and was conditioned upon obedience to Mosaic law (Ex.19:5-8; 23:20-22; Deut 4:1; 6:3, 17-18, 24-25; 7:12; 8:1-2; 11:8, 22-24; 29:13; Jer 11:5). The Cov of Circumcision & the Mosaic did not operate on different bases. The 2nd promise of the blessing of the nations was only in his single offspring, Jesus (Gal 3, etc). It is conditioned upon union with Christ, which is summarily referred to as "through faith." Thus in Gal 3, Paul is not contrasting the Abrahamic Cov with the Mosaic Cov. He is contrasting the different Abrahamic promises, which makes much more sense of Gal 3:16. 1st promise was to offsprings plural. 2nd promise was to offspring singular (Gen 22:17a vs 17b-18 cf Gal 3:8 - Check the ESV or Ref Study bible note on 22:17-18). 3:18 is not referring to different kind/types/basis of covenants. "Law" in that verse is not generic "law" but specifically "the law" (the one that came 430 years after). Likewise "promise" is not generic (a principle of inheritance), but specific: "the promise." Which promise? He specified in 3:8. The inheritance of this specific promise does not come through "the law," because it comes through this specific promise of the Christ, and as Paul said in 2:21, "if righteousness were through the law, then Christ died for no purpose." Without distinguishing these promises, Jamieson's comments seem to contradict. He said the law did not bring about the fulfillment of the Abrahamic promises because it operated on a different basis, but then also said "What it means for them [Israel; Abe's numerous carnal offspring] to participate in Abraham and Covenant is mediated through the law, right? The law defines the terms of their participation in those promises given to Abraham." In other words, the inheritance of the land does come through the law. But I think this distinction between promises is latent in what he said. Making it more clear and explicit would I think help clarify things. Here's more on this: contrast2.wordpress.com/2021/06/04/promise-law-faith-a-review-article-jirbs-20/

I can hardly follow the conversation! Had to watch a couple of times. I'm nowhere near as fast, mentally. Anyway, I shared the video with a friend who recently started observing Old Testament feasts and laws, even as a non-Jewish believer, after they joined a small church. Hope its helpful to them. But I don't know if they'll be able to follow along! 😅 If anyone knows resources better suited to the average Christian, I'll gladly take recommendations.