Either the “one true God” can be separated or the man/God nature of Jesus can be separated.
Luke 1:28-35 shows that the three persons in one God can act independent of each other. That is the concept of the Trinity; three persons in one God. Mary conceives and bears the Son. The Holy Spirit came upon her and the Most High overshadowed her.
It is also revealed in the baptism of the Lord. Jesus is walking out of the water, the Spirit comes to rest over Him in the form of a dove, and the Father speaks from the heavens.
The Son can call out to the Father on the cross. But we know that the Father did not truly forsake the Son.
You are still left with the idea that 1/3 of the Godhead died.
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>> “But we know that the Father did not truly forsake the Son.” <<
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You seem to ‘know’ lots of things that simply are not so!
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