Eloi! Eloi! Lama sabachthani?

My G-d! My G-d! Why have you forsaken me?
Matthew 27:46 and Mark 15:34

Many Christians recognize this as being some of the last words of Yeshuah on the cross.
It comes from Psalms 22:1, where it is written as “Eli, Eli, lamah azovtani . . . .”
My G-d, my G-d, why have You forsaken Me? Why are You so far from helping me, and from the words of my groaning? O my G-d, I cry in the daytime, but You do not hear; and in the night season, and am not silent.


I have a question, if Yeshuah were G-d, why exactly is he crying out that G-d has forsaken him?
It's kinda hard to forsake yourself, is it not?