The Lord’s Supper is a meal with a unique vantage point.
Christians look at three realities and are spiritually nourished in each.
From Guy Prentiss Waters:
The Lord’s Supper, therefore, always and simultaneously points in two directions, backward and forward. It points backward to the finished work of Christ on the cross. The Supper, in particular, underscores this finished work as the fulfillment of the words and works of God in redemptive history leading up to the cross. It also points forward to the certain hope of the glorious return of Christ at the end of the age. It reminds God’s people of the certainty of this hope—that the great, promised messianic banquet awaits us. If God was faithful to bring his promised Son into the world the first time to live, die, and rise again for our salvation, we can surely trust his promise that Jesus will return at the end of the age to consummate the application of his saving work in our lives.