We believe that the Lord's Supper is a memorial of Christ's spiritual substitutionary death on the cross in payment for our sins. This is the basis for mankind's reconciliation with God (1 Corinthians 11:23–25, 2 Corinthians 5:17–21). Believers are to partake of the elements of communion which are unleavened bread and and wine (non fermented grape juice may be substituted). Communion is a time when Christians express their faith and positive volition to God in worship as well as time of intimate fellowship with God.
The unleavened bread symbolizes the perfect sinless humanity of Christ who was tempted in all ways but was without sin. He never went against the Father's will at any time and therefore arrived at the cross sinless. The cup symbolizes the last three hours of Christ's spiritual substitutionary sufferings as He bore our sins and was violently judged by the Father (2 Corinthians 5:21; 1 Peter 2:21–24, Isaiah 53:10–12). The unleavened bread and the cup are symbols of these things and never actually become the physical body and blood of the Lord Jesus Christ.