The document discusses the history and origins of Holy Communion (also called the Eucharist). It explains that the Eucharist began as a ritual Jewish meal called the Passover Seder. During the Last Supper, Jesus used elements from the Passover meal and gave the bread and wine new meaning as symbols of his body and blood. The early church continued celebrating the Eucharist in remembrance of Jesus' command at the Last Supper. Over time, the ritual developed into the liturgy that is still practiced in many churches today.