What event is commemorated during Easter celebrations in Christianity?

Easter celebrations in Christianity primarily commemorate the resurrection of Jesus Christ, which is seen as the cornerstone of Christian faith. This event marks the belief that Jesus rose from the dead on the third day after his crucifixion, symbolizing victory over sin and death and offering the promise of eternal life to all who believe. This resurrection is foundational, as it validates Jesus' divine nature and the truth of his teachings.

While other events such as the birth of Jesus (celebrated at Christmas), the Last Supper (commemorated during Maundy Thursday), and the Ascension (observed forty days after Easter), are significant within the Christian tradition, they do not hold the same central significance as the resurrection during Easter. The focus of Easter is singularly on celebrating the triumph of life over death, which is why this event is recognized and celebrated with such importance in the Christian liturgical calendar.