The Lord’s Supper is not solely a reference to a past event. It is an experience of the present work of God. It is an anticipation of the completed work of God.
From Fleming Rutledge.
Remembering in Scripture refers to present action. If a woman prays to God to remember her mother, that does not mean “please think about her from time to time.” It means, “Take action on behalf of my mother.” Similarly, if we say that the Lord’s Supper is a “memorial,” we do not mean that we are simply thinking about Jesus’ last supper. When we repeat Jesus’ words, “do this in remembrance of me,” in the communion Service, we do not simply call Jesus to mind. Jesus is actively present with power in the communion of the people. Disputes about the Lord’s Supper have divided the Christian church, but understanding the biblical concept of remembrance can help us. We are not just thinking about Jesus’ actions in the upper room; we acknowledge that he is present and acting with the community gathered at the table in the present time. The doctrine of the real presence of Jesus in the Lord’s Supper can be understood in this way by everyone, from the most sophisticated person to the simplest.
Fleming Rutledge, The Crucifixion – Understanding The Death Of Jesus Christ Eerdmans, Grand Rapids MI, 2015, pg 218-219.