Christ is the Lamb that takes away the sins of the World. You are taking this out of context by holding that, on the cross, Christ took your sins away..
1. Christ is of purer eyes than to behold evil and canst not look upon iniquity means he will not justify the wicked works (failing to do judgment and justice by perverting the law) as did the scribes, lawyers and Pharisees. He refused to do judgment according to their wicked interpretations of the law.
2. Indeed God will not punish the righteous and acquit the wicked because he will always do judgment and justice. Christ willingly took our sins knowing what would be the cost and that was not just dying a physical death on the cross. To be separated from the Father would be an even greater wrath. Or do you not believe that Christ was separated from the Father?
3. Christ asking the Father, "Why has thou forsaken me?" is Christ making a definitive statement of fact. He did not ask, "Please do not forsake me." In paying for the sins of his people, as mentioned above, Christ had to pay for their sins of unbelief causing them to forsake the Father. He stood in their/our stead and was separated/forsaken by the Father as the Father had said he would do to them. Christ witnesses plainly that the Father indeed forsook him.
4. Christ also witnessed that the Father had already given him the power to lay down his life and the power to take it up again
The Father indeed did deliver him.
5 The early church knew the truth of penal substitution. John Calvin did not discover anything that the early church did not already know. Eph 3:10 says, "...that it might be known by the church the manifold wisdom of God." It was already revealed
Yes, the main point of Israel being forsaken because they went after the gods of the nations is mentioned repeatedly in the old testament. Yet even here Scripture tells us God was with them. They were forsaken to chastisement (chastening). They were in bondage. But the main theme is God is faithful and would ultimately deliver them from bondage.
I agree that this is how "forsaken" and "chastisement" should be interpreted when we look at the Cross.
1. I agree Christ is of purer eyes than to behold evil and can not look upon iniquity meaning he will not justify the wicked works. In context of the he passage it means God will not condone sin (the prophet was appealing to God's righteousness).
2. I agree God will not punish the righteous and acquit the wicked. I agree Christ willingly took our sins knowing what would be the cost. I disagree that God punished His "Righteous One" in order to acquit the wicked. Instead I believe God will condemn the wicked at Judgment. Rather than an elaborate scheme involving transferring sins, punishing sins separated from the ones who committed the sins, etc. I believe God recreated the wicked (He "sprinkled clean water on them, took out their heart of stone, gave them a new spirit, put His Spirit in them). In other words, God's Word stands eternally. He will condemn the wicked, but the "solution" was simply an act of recreating men (we must die to the flesh, repent, and be made alive in Christ).
There is no need to have God playing the fool, pretending His Righteous One is a sinner. There is no need to punish sins apart from punishing the ones who committed the sins. There is no need for all the pagan philosophy inherent in Penal Substitution Theory. Men are simply reborn in Christ, where there is no condemnation.
3. I agree Christ asking the Father, "Why has thou forsaken me?" is Christ making a definitive statement of fact. Just like God never abandoned Israel when they were forsaken to chastisement, God never abandoned Christ when He was forsaken to suffer and die on the cross. Read Psalm 22 as an entire narrative (don't pick through it, start with the beginning and see how it concludeds).
4. I agree that Christ also witnessed that the Father had already given him the power to lay down his life and the power to take it up again. But Christ also said He does nothing of His own accord, but does His Father's will.
The Father indeed did deliver him.
5 The early church did know of penal substitution as aspects of Christ's work in that Christ bore our sins, the Just for the unjust, and in Him we escape the wrath to come. But what we call Penal Substitution is much more than that.
John Calvin invented Penal Substitution Theory. Calvin was a lawyer who was steeped in Humanistic Law. While his views are certainly linked to the past, particularly Roman philosophy, Penal Substitution Theory is closer to Calvin's commentary on De Clementia (on retributive justice, demands of the law, demands on judges, etc.) than it is on Scripture.