Mary Magdelene sees that when the Romans turned over the cross, Jesus held himself off the ground in order to keep the prophecy true which says the Messiah will not have any broken bones. Mary realizes that Jesus has direct control over the forces of nature. When Jesus is lifted up she covers her head, just as she would in the courtyard of the Temple before the Holy of Holies which is the presence of God. Mary realizes that Jesus is God just as he told Caiaphas.
On the way to the crucifixion, John looks sad, angry and disappointed in this apparently tragic and meaningless end. Then John flashes back to the Last Supper where Jesus said "This is my body, broken for you. This is my blood, poured out for you." John looks at Jesus on the cross and his eyes fill with tears of joy and he understands what Jesus' mission was and the purpose of the cricifixion.