Sorry, but God did not DEMAND Jesus' bloody death.  That was the result of POLITICS---religious and secular.  The Jewish hierarchy was jealous and angered by Jesus' following.  They wanted to maintain their 'cozy' relationship with the Romans.  So they conducted a 'kangaroo court' at night, found Jesus guilty, sent him to the Roman governor to be crucified.  

John's Gospel states that "God so loved the world that he gave his only Son." [John 3:16].  God used Jesus' death [but did not demand his blood nor death as payment for OUR sins].  As Jesus got further and further along in his ministry, he knew that there were those plotting his death, even among his chosen followers.
In John's gospel, Jesus was crucified on the preparation day for the Passover,when lambs were being sacrificed in the Temple.  The symbolism, used by John, writing for his community, would not be missed.  Jesus is presented as the new and perfect Passover lamb.  But  God does not DEMAND the bloody death of Jesus.