I agree. Lets take a look at that passage. Would you say it pictures two fold of sheep or only one? Amos 3:1,2 maybe written around 700BC. Do you think these only known by God could be those foreknown in Romans 8:29. If Jer. 31 is two fold of sheep and Jesus came unto his own and his own received him not which fold did he come to? After all God had given a bill of divorce to one of them per Jeremiah 3:8 Who are the other sheep not of this fold in John 10?
I could give more but maybe later. Just some food for thought.
Let's back up for a second. True, Jehovah God knew from the beginning who the elect are. This is easy for God given His great power.
If you study the Old Testament with the purpose of gaining understanding of what God expected of the Jews you will find that their task was different from that of which He expects of the elect in this church age. Another way of saying this is the Ministry of Israel pre-resurrection is different from the mission of the Church post Acts ch 1. If you do not agree with me, which is of course your right and privledge, then let's stop righ here as we are not on the same page.
The mission or ministry of the church and our participation in it does not determine our status before God at the judgement. We could put in all kinds of service to the church but if we are not trusting in the shed blood of Christ, we are not saved from judgement. The same would apply to OT Israel. Being Jewish and the recipient of the Abrahamic and other covenants or adhearance to the law of Moses does not determine one's salvation, for the OT Jew, it's trusting in the unknown and not yet ressurected savior, Jesus for forgiveness of sin. Jesus tells us that Abraham looked forward to the day when Jesus would appear. Abraham was trusting in Jesus 100s of years before He actually arrived on earth. Keep in mind that salvation is by grace through faith in all ages, not just the church age. Granted, true repentence post resurrection will result in faith in Christ and no one Jew or Gentile will in this age or the age to come enter into a right relationship outside of trusting in Christ.
I think you would do well to consider the possibility that the two sheepfolds have different ministries and that God made promises to one of those ministries that he has not delivered on as of yet. You may consider some of the Biblical evidence that God will make good on those promises in the future. Considering that the elect of this age do not do well with respect to keeping God's precepts why should God divorce any ministry for disobedience when both ministries are guilty of the same offense? After all, does not God hate divorce? Has not God said that if a people repent and return to Him, he will return the them?
All of this of course depends on instruction in the written Word of God. If there is no evidence that God has not made promises to the Jews that are everlasting them I have nothing of value to say on the matter. If however God says in the Bible that at some point in history all Israel will be saved, then I would submitt for your consideration that he has in mind to raise up Jews of the elect and bring them to faith in Christ and keep his promises to restore them to the land. This act of bringing those elect descendents of Abraham through Issac through Jacob to faith in Christ is what the tribulation is for. At that time 144 thousand of those elect descendents of Abraham will proclaim Jesus as Lord.
Jehovah will end this age in a spectacular way, just like he has ended every other age as mentioned in the Bible. How much more spectacular than to bring all Israel into a right relationship with him through Christ before the whole world and in doing so keep his promise to restore them to the land?