In Christian theology, the Death, Resurrection and Exaltation of Jesus are the most important events, and a foundation of the Christian faith. Easter is the most important festival in the Christian Calendar. It celebrates God raising His Son, Jesus, from the dead, which for Christians symbolizes Jesus’ destruction of the power of sin and the possibility of an after life in Heaven.
Christians remember the events of the last week of Jesus’ life (before the crucifixion) during the Holy Week. Holy Week ends with Easter Sunday which is the day when Christians celebrate Jesus’ resurrection.