Easter is one of the principal holidays, or feasts, of Christianity. It marks the Resurrection of Jesus three days after his death by crucifixion. For many Christian churches, Easter is the joyful end to the Lenten season of fasting and penitence. As promised throughout scripture, the saviour would be raised from the dead on the third day to be alive with the Father in heaven. Without this holy sacrifice, there could be no salvation for mankind.
The Friday before Easter is known as Good Friday in the Christian faith. This holy and important day recognizes when Jesus Christ was crucified and died on the cross at Calvary as the ultimate sacrifice for people's sins (1 John 1:10). Without Christ's sacrifice, there could be no salvation for humanity.
Palm Sunday is the day we celebrate the triumphal entry of Jesus into Jerusalem, one week before His death and resurrection (Matthew 21:1–11). As Jesus entered the holy city, He neared the culmination of a long journey toward Golgotha. He had come to save the lost (Luke 19:10), and now was the time—this was the place—to secure that salvation. Palm Sunday marked the start of what is often called “Passion Week,” the final seven days of Jesus’ earthly ministry. Palm Sunday was the “beginning of the end” of Jesus’ work on earth.
In this time leading up to Christ's crucifixion on the cross, we find Jesus in the garden of Gethsemane praying to His Father to take the burden of His sacrifice that is to happen. Yet at the same time, Christ knows that His death is His Father's will and that it must be done. Christ died for everyone so that those who believe can have their sins forgiven and be saved. 
Moses and Aaron were fearless leaders in the wilderness. Even though God provided, the people continuously complained. God provided again, and they people complained again. Over and over this repeated. God was angered, and introduced snakes into their midst to test their faith. Does this sound like what is happening today? God continually blesses us, yet we fail to see His love and provisions. Since the fall of mankind, humans have been slaves to sin. Only Jesus can save us.
See how God uses average people to do His miraculous work. In Exodus, Moses thought he was unskilled and unprepared to do God's work, yet God proved him wrong. In John 2, Jesus performs a miracle by changing water to wine. Jesus taught us to believe that nothing is impossible with God, and that we are to follow His commandments.
Jesus conquers temptation in the 40 days of wilderness. Christ teaches us through wilderness and tough times, we learn to overcome temptation by seeking God. The wilderness is the start of the Lent season leading us to Easter.
In the New Testament, Transfiguration is when Jesus Christ took three of his disciples, Peter, James, and John, up on a mountain, where Moses and Elijah appeared and Jesus was transfigured. His face and clothes became dazzlingly bright. The Transfiguration is a preview of the future when the Son of Man will come in glory to consummate his kingdom.