In his teaching, Pastor Rhode addresses the Corinthians' improper consumption of the sacramental bread and wine, emphasizing the importance of recognizing them as Christ's true body and blood, as stated by Jesus during the Last Supper. He connects the Old Covenant at Sinai with the New Covenant in Christ's blood, highlighting the Lord's Supper as a sacrament for receiving forgiveness and spiritual benefits. Moreover, Pastor Rhode explains the Lutheran perspective on the Lord�s Supper, rejecting Aristotelian and mystic philosophies like transubstantiation. Instead, Lutherans believe in sacramental union, affirming that the bread and wine coexist with Christ's body and blood. Regarding Roman Catholic practices like the elevation of the consecrated host and its preservation in a tabernacle, these are viewed as erroneous from the Lutheran standpoint. Ultimately, the Roman Catholic error in the Lord's Supper centers on transubstantiation, diverging from the Lutheran understanding of the sacrament.