Churches across the United States and the globe plan to observe the annual World Communion Sunday on Sunday, October 1, 2017. Most of us have heard about World Communion Sunday but may not know much about where the celebration originated. According to the website of the National Council of Churches, World Communion Sunday began in 1936 in the Presbyterian Church and was adopted by the Federal Council of Churches (predecessor of the NCC) in 1940. Since then, the celebration has grown into an international ecumenical celebration of Christian unity. It is a day when we mark the almost universal Christian practice of breaking bread with one another and remembering both the night of Jesus’ betrayal—when Jesus instituted what we now call the Lord’s Supper as a lasting remembrance—and of Jesus’ sacrifice.