What is the Lord's Supper meant to remind us of every time we take it?
Every time believers partake of the bread and cup, the Lord's Supper is meant to remind them of the finished work of the cross and to show forth the Lord's death. It serves as a constant reminder of that completed work, with no set frequency stipulated in the passage.
Les explains that Melchizedek's bringing bread and wine was a subtle prophecy, since that was not what was normally used in the sacrifices of Abraham's day. It pointed forward to Jesus administering the Lord's Supper in Matthew 26. Les connects the bread and wine with the resurrection as the whole idea of the Lord's Supper, and he then gives the constant reminder: every time we partake of that bread and cup, it reminds us of the finished work of the cross. The doctrinal reason appears in 1 Corinthians 11:26: as often as you eat the bread and drink the cup, you show forth, or remind yourself of, the Lord's death. Paul gives no stipulation about how often a church practices it, whether every Sunday, once a month, once a quarter, or once a year.