Passover Liturgy - Is This a Prophecy?

Jesus interrupted the passover liturgy right at its climatic moment. Hum careful jewish christian readers would see a connection. In john 19, we're told that jesus, seeing that all was now finished, he said, in order to fulfil the scripture, i thirst. It's an agonizing death, but he still has presence of mind. Now do you think that man was not thirsty before? Why does he refer to his suffering and death as a cup? And why did he go out into the night after the hellel som o son?Why does he fall down on the ground and then ask the lord to take this cup away?