The cross was a vision quest, not a payment for sin. It was from the Father, not to the Father.  Jesus was gift, not scapegoat.  He was God experiencing the apartness of man from God by his suffering and abandonment on the Cross.  When he told Mary to stay with John, he was not making Mary all of our mother, he was telling Mary "I am dead to you." and all that she had told him of his nativity was unfulfilled.  Likewise he told John to take care of his grandmother, not to baptize the nations.  The timing of this in scene in John and his calling out in the Synoptics is very clearly at the end. Get your Bible out and read it for yourself.  The next line is "I thirst" which refers directly back to the Eucharist. Open your heart and believe.