Brother, God’s plan will save “all Israel”. God has not abandoned the part of Israel in His “other sheep” that are faithful to the Old Testament, Judaism, and that are not currently of the house of God in the sheep pen of Jesus with the additional New Testament. Before Jesus, there was also rest with the forgiveness of sin, but it was slow to obtain with animal sacrifices at the earthly temple. It took more time to do what was necessary to get rest with the animals in the earthly temple for the forgiveness of sin. The superior rest we have after Jesus is not equivalent to the Sabbath. The current loop of forgiveness internalized is quicker then the external with the animals allowing us to gain the rest quicker then was possible before. The time from knowing you have sinned to gaining forgiveness with the animals in the earthly temple did not give you quick rest like the immediate rest of the forgiveness that we obtain through the intercession of Jesus as our high priest in the heavenly temple. We no longer have a long wait to experience the rest of forgiveness, it is immediate compared to the old system with the animals, but that rest is different from the Sabbath covenant “forever” that God asks of us as a sign between Him and us “forever”.
God did not fail with Israel, He will save “all Israel”. It says grafted in among the branches that were broken off, other branches replacing a broken off branch from the 12 tribes of Israel to enter through the 12 gates of the new Jerusalem. You will need to be added to one of those tribes to belong, already established in the olive tree of Israel. We feed from the root like the rest of the tree but are not grafted into the root, we replace the broken off branches, the tree was not broken off, only branches from the tree are broken off and we are grafted in to replace those branches. God does not have to start over with a new tree to replace a branch that is not bearing fruit.
Fellow citizens of the salvation of “all Israel”, with its two parts mentioned in Romans 11:25-32.
Now therefore ye are no more strangers and foreigners, but fellowcitizens with the saints, and of the household of God; (Ephesians 2:19)
Israel continues with those who did follow Jesus, because “part” of Israel hardened does not lead God to abandon Israel. God only needed one man, Noah, to continue His remnant from the beginning with Adam and Eve. Both parts of Israel, those that remain in the house of God that excepted Jesus and those “other sheep”, the part of Israel that hardened and will remain hardened until all the gentiles have come in when Jesus returns and forgives them, will be fellow citizens of “all Israel”. God is saving “all Israel” and not just part of Israel with Christianity with a separate existence until His return of His “other sheep” with Judaism.
It is clearest in Romans 11:25-32, where God sees two parts of Israel that He will unite, saving “all Israel”: the hardened part called Judaism and the part that excepted Jesus called Christianity.
The early church with Paul was composed of both Israelites and former gentiles together, but God also sees His “other sheep”, the broken branches that are not from the sheep pen of Jesus, which He also wants to bring, saving “all Israel”.
That is exactly what God is saying with “all Israel” will be saved in Romans 11:25-32. There is no doubt in context that God is speaking of Christians and our enemies in Judaism, two parts of Israel that remain separate until all the gentiles have come in, but which Jesus will forgive when He returns to save “all Israel”. You assume that God did not succeed with Israel because it continued with few, and most were hardened, but as in the past, God only needed one man, Noah, to continue the remnant line from the beginning to fulfill the promise of the descendent of Adam and Eve that would save us, Jesus.
We no longer do the shadows that Jesus replaced, like the sacrifices of animals, because we have the reality with Jesus that the shadows pointed to, but the 10 commandments are not shadows, they are the minimum that God demands to demonstrate love for God and love for neighbor, Jesus made them more demanding not only by revealing the act as sin, but also by revealing the thoughts that lead to the act as sin. Anyone who continues the shadows rejects Jesus, but anyone who rejects the ten commandments does not love Jesus and has abused Paul’s “hard to understand” message to defend the “error of the lawless”. United in our hope of the soon return of Jesus, Jorge