Communion, also known as the Eucharist or the Lord's Supper, is a central act of Christian worship that commemorates Jesus' sacrifice. Its roots trace back to the Old Testament Passover, which celebrated the Israelites' liberation from Egypt. Jesus redefined this meal during the Last Supper, establishing a new covenant through His body and blood. The early church continued this practice, emphasizing repentance and thanksgiving. Today, World Communion Sunday unites Christians globally, reminding us of our shared faith and the grace of God in Jesus Christ.