In fact, notice how often in church gathered the word remembrance or remembering is used. We are a people gathering together to remind ourselves who we are. Memory work is in a sense identity work. If you've ever met a person with amnesia, they may be functioning beautifully. They may be talking, they may be laughing, they may have a perfect heart rate, but they will not be able to tell you who they are.
Memory is the source of identity.
The church gathers together to do memory work, to remember how it is they have come to know the presence of God in ages past. We read from the Old Testament more than two thousand years ago. We read from the New Testament. We sing hymns that have been written over the last two thousand years. It's the church gathered together doing its memory work, reminding ourselves of the many ways in which God has been made manifest to human beings over the ages.