How do we know the Lord's Supper is a true practice for Christians?

The truth of the Lord's Supper as a Christian practice comes from the apostolic teachings found in Scripture. Paul, having received revelation from the Lord, emphasizes the importance of this observance in his letters, particularly in 1 Corinthians. The act signifies not only a memorial of Christ's death but also the fellowship among believers who participate in the Gospel. It serves as a re-affirmation of their faith and shared beliefs in the work of Christ, highlighting the sovereign grace extended to them in the New Covenant.