This verse in Matthew hearkens back to the prophetic 22nd Psalm - a Psalm that is clearly Messianic. I will quote from only a portion of this Psalm which, when read using common sense, clearly shows that Yahshua (the prophetic focus of this Psalm) refers to God (Elohim and El) as HIS God (Elohim). I will include in parenthesis the Hebrew word translated as "God." I also mention this point in the article that discusses the particular word games played by desperate Traditional Christian and counterfeit Messianic leaders with the Hebrew words Elohim and Echad. Jesus is invoking the Psalm in the minds of His followers. He is not testifying that He is not God, rather He is pointing out to all who can understand that He is fulfilling the prophecy.
Jesus, and the Psalimist, know that God has not forsaken Him, but that this is how the events look to an outside observer. It looks exactly like He has been forsaken, but instead He will rise from the dead.
You are truly displaying a breathtaking ignorance of orthodox Christian belief. What were you doing for the last 20 years?
SD
I'll take this as a compliment.