unless Jesus Himself was God, He could not have paid that penalty.
Where do you get that idea? The redeemer had to have the exact payment necessary to free a debtor. God's law was "eye for an eye, a tooth for a tooth and a life for a life"....so the life offered had to be an equivalent of the life lost.
What was the debt? The loss of endless, sinless, life. In disobeying the direct command of God and stealing something that belonged exclusively to their Sovereign, the first humans lost what God had given them, not only for themselves but also for all their children.
Since sinless mortal life was lost, only a sinless mortal life could redeem them. Jesus came from heaven as a sinless mortal human to offer his life in exchange for Adam's. (Matthew 20:28)
This is why he is called "the last Adam" because he paid the debt that the first Adam left for his children. (1 Corinthians 15:45)
God was in no position to offer his life because he is an immortal and cannot die. If Jesus was God, then he too would have been immortal and his death would have to have been faked. If Jesus did not really die, the ransom (redemption price) was not paid, and we are all still lost in our sins.
Since there is no way for the Universal Sovereign to become a mortal human, and die....Jesus, because he was not God, but "God's holy servant", (Acts 4:27) could offer to become a human being and offer his life for Adam's, thereby paying the debt and releasing the children of the debtor....us.
If God had come in the flesh, the overpayment would have been ridiculous.....like a hundred billion cans of bug spray to kill one mosquito.
Jesus did not have to be God....all he had to be was sinless.
Beliefs based on assumptions don't lead to the truth...they just muddy the waters so that the truth is obscured and people remain confused...
If God had not "forsaken", or "abandoned" his son to allow the process of death to be finalized, Jesus could not have died.
His death is what paid our way out of the slavery our father Adam caused for us.