I was a hard-line Dispensational for 40 years. Dispensationalism raises many questions that cannot be answered within that system. Hyper-Dispensationalism finally caused me to wake up as to how this is an unscriptural religious system. Hyper-Dispensationalism demands separate covenants for the Jews and Gentiles.
The most basic way that Dispensationalism is not according to the New Covenant and God's Grace is that ALL believers - Jews or Gentiles - have righteousness imputed to them. That righteousness is Christ's righteousness, and it is not dependent on covenantal nomism or any other false presumption. We are all the same in Christ. We are all reconciled to the Father the same way. That is God's own provision. He has determined how we receive reconciliation. We can be a bunch of fools and re-write His program but we are creating lies which demean Christ's own finished work on the cross. The New Covenant is a Blood Covenant. Jew or Gentile - it matters not. Without the Blood which was presented in the heavenly Holy of Holies as an ongoing sin covering we are all in a state of being unreconciled to God Almighty. Christ is our attorney and He calls us righteous before the Father.
God created mankind for a relationship. Mankind broke the Edenic Covenant which brought a curse upon mankind and the world. God is in the restoration and reconciliation business. Mankind has never been able to help himself. Adam and Eve could not keep one commandment. The Mitzvot never made the Jews righteous and reconciled, but it kept them condemned as unworthy (none of us are worthy without Christ). Christ's baptism of death on the cross is what God would accept as that which would restore mankind's relationship with the Father. You folk who teach two covenants are teaching what Paul called "another Jesus." Repent and stop leading others astray.
Christ is in the Bible from Genesis to Revelation. The Book is about Him and how He is our righteousness. We look back in the OT writings and find how Christ was pre-figured in the Scriptures, but Christ is the fulfillment, and we don't have to wait for fulfillment. All that we are waiting for is the consummation. That is the literal interpretation that Dispensationals say that they call for.
Those who give the Old Testament so much weight over Christ's fulfillment of the OT Scriptures ought to read the rabbinic oral teachings, and those teachings put in writing are called the Talmud. You'd probably be surprised as to how many scenarios of the Millennium you'd find. In the Pseudepigrapha (no relation to the Talmud), in the Fourth Book of Ezra, to be more specific, it was written around 100 A.D. that the true Messiah would come and drive out all Gentiles from Jerusalem. (You see, they did not accept the Messiah that came and that fits with John Hagee's false teachings.) Messiah would then set up a 400 year kingdom and then Messiah would die. Eventually God would unleash his wrath on mankind and the world. Today Dispensationals have all sorts of scenarios, none of which are specific to our accepted canon of Scripture. Some think that Jews only be on the earth during the Millennium and the Church will be in Heaven and never come back to earth (but the Bible teaches that Christ has one future Kingdom, on the New Earth, and will reign over all of His people and creation); some think that Jews and Gentiles will be co-equal and be on the earth together during the Millennium. Still others think that Jews and Gentiles will be on the earth but Gentiles have a secondary position. Gentiles will be selling gefilte fish tacos outside the Temple walls.
Some believe the Law and animal sacrifices will be restored. Of course, the answer to animal sacrifices is that they will be a memorial to Christ's sacrifice. I ask, why must we memorialize the One who will be there in person? And, of course, the Jews will need a thousand years of teaching to finally realize that Christ is the true Messiah and then they must be given the chance to fall away and succumb to a second round of God's own wrath after He had unleashed His full wrath upon the Jews at the end of the Great Tribulation. It all makes perfect sense and it all follows how everyone must be reconciled the same way, doesn't it? It's no wonder the world looks at us and thinks we're a bunch of crazies. But that's what we are. We like to fight and argue and tear down all that Christ has already accomplished and we refuse to accept it.