Communion is an act of remembrance of Christ and thanksgiving for His sacrifice for our sin. Bread is a symbol of Christ’s broken body, which He sacrificed on the cross, and wine (or grape juice) is a symbol of the blood He shed for us (Mark 14: 17-26 and 1 Corinthians 11:23-29). We do Communion irregularly but often, and try to do it when the Scripture being taught reflects what Communion represents.