You may wish to watch this excerpt here:
Jesus radiated love in his healing and teachings and approached the crowds with unprecedented authority for saying and acting the truth. The Apostles understood Jesus' mission when, fearful of the authorities after his crucifixion and death, they saw him risen and received the Holy Spirit from him.
In his book "Introduction to Christianity" Joseph Ratzinger bases the evidence of the Resurrection of Christ on the power of love with which Jesus of Nazareth defeats death and mortality in his selfless love of the Father while dying on the cross (humanly speaking: Being in the Other who still stands when I have fallen apart).
In the New Testament, the Resurrection of Jesus Christ is the central theme that God leads the inspired writer to write and so bring the readers attention to. The story of Jesus walking on the waters of the sea is more than an event to show his power; for it reminds the listeners about Jesus' victory over the waters of the sea considered the abode of death. He is the One who takes Peter by the hand to deliver him from death. He is the One who leads the Church, new Israel, out of the bondage of death and "slavery in the land of Egypt." Every event recounted in the Gospel has multiple meanings; all meant to encourage the young church to persevere in the times of darkness; but more significant they proclaim the body of Christ in the Eucharist as the eternal manna that feeds the new Israel in their journey to New Jerusalem as the manna fed the hungry Israelites in their journey out of slavery - the difference being that while the Israelites who ate the manna died the new "People of God", who eat the body of Christ, will live with him for ever. While the pagan religions were declining, and the Jews were scattered after the destruction of the Temple in 70 AD, the Christian movement gave a new hope to the crowds who listened to the "good news" - the Gospel.