John 18:28

28Then they led Jesus from Caiaphas into the praetorium. Now it was morning, and so they did not enter into the praetorium, so that they would not be defiled, but might eat the Passover.
18:28The Last Supper occurred a day earlier than most Jews celebrated the Passover supper, so that Jesus could both celebrate the Passover and be the Passover Lamb on the Cross. This was arranged by the Providence of God and permitted by a tradition of the Jews for those from Galilee.(Conte)
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