Jesus finished off sin sir, however until all things are subjected to Jesus, and Jesus enters in before God and subjects himself and all that was done to God, then it is not finished, it is a different finishing, which is still at least a millennium away. Here is the account Scott:
(1 Corinthians 15:22-28) . . .For just as in Adam all are dying, so also in the Christ all will be made alive. 23 But each one in his own proper order: Christ the firstfruits, afterward those who belong to the Christ during his presence. 24 Next, the end, when he hands over the Kingdom to his God and Father, when he has brought to nothing all government and all authority and power. 25 For he must rule as king until God has put all enemies under his feet. 26 And the last enemy, death, is to be brought to nothing. 27 For God “subjected all things under his feet.” But when he says that ‘all things have been subjected,’ it is evident that this does not include the One who subjected all things to him. 28 But when all things will have been subjected to him, then the Son himself will also subject himself to the One who subjected all things to him, that God may be all things to everyone.
You are taking God's explanation of events as literal from the world's perspective--but these things are about
His ways which are higher, and not as perceived. As I have explained:
In the world (
as in Adam) each event comes as Paul explained, "
each in his own order." Which is obvious for each in birth, but he was referring to our death and entering into Christ. But in the case of Christ Himself entering into God--these are
not of the world, and therefore there is no millennium regarding those events between Christ and the Father. When He went to the Father, He rose above the earth and above that timeline of such events. So, if you want to claim that "
It is finished" did not fully occur at His resurrection, but only when He ascended--then great, that much is true. But beyond His ascension and leaving the worldly timeline...what you are seeing and basing your position on, is only
of the world. But if you consider yourself
not to be of the world, then it is not good that you continue speaking in those terms
of the world, but
renew your position to the terms of Him who has already enter in. Until then--indeed, there is a millennium between you and Him who is True...which need not be.
As for explaining the timeline in the world as if
the Master has delayed His coming (as those evil servants say)--these are the times of the gentiles, that other fold which Christ must also bring. But just as He is the End and only came at the end of that first fold of Israel for whom He first came; He also being the Beginning, also only comes at the beginning of that other fold--for the cross is the apex,
once for all. Thus, by faith those of that first fold were saved by looking
forward believed in the promise of His coming--and then He came. Likewise, those of the other fold of the gentiles, look
backward, believing that He has come already. Which is to say, that although the world perceives these events as not being finished--nonetheless, "
It is finished."
And so it is written of Israel, that first fold, and told to Lot: "
Escape for your life! Do not look behind you nor stay anywhere in the plain. Escape to the mountains, lest you be destroyed.” And yet the opposite foretold of the gentiles: "
Look behind you, O Benjamin! (sons of the right hand)."