to wit, that God was in Christ reconciling the world unto himself, not reckoning unto them their trespasses…
There is a common understanding, which I agree is a misunderstanding, that the Father poured out his wrath on the Son at the cross, and also abandoned him there. But no biblical text says that. Texts are patched together and misread to arrive to such a conclusion. But this is a common understanding, especially the belief that the Son was abandoned at the cross by the Father.
There are certain things even God can’t do. God can’t cease to be God. And that’s exactly what would have happened if the the Father separated himself from the Son. As Jesus taught in John 14 and 17 on the eve of his crucifixion, the Father is in him and he is in the Father. And the Spirit is in all of that. The Trinity is Three Persons, but not in the sense of three human beings. God is One through and through, but also Three. A mystery indeed. To separate the Trinity even for a moment would mean that God is no longer God or eternal.
And just as bad if not worse is the idea that the Father poured out wrath on the Son at the cross. Instead we learn who God is supremely I believe by looking at Jesus on the cross. This is a misreading of Hebrew Scripture which attributes all that happens to God, when it says in Isaiah that God struck him. The idea is that Jesus was made sin, that God can’t look on sin, and that God poured out his judgment on Christ at the cross. The Father is wrathful while the Son takes that wrath in love in this false picture. We’ve heard this in my circles for so long, we almost don’t even blink an eye or give it a second thought. It’s like the same reaction we have when we hear the unbiblical notion that God pours out his wrath on sinners forever in hell. All of this is dead wrong.
Instead of going on, I would much rather stop here, and share a helpful, if somewhat lengthy article with a full explanation. Did the Trinity break at the cross?