virtually no distinction between the sacramental signs and the things signified. They are identical. Although Radbertus posited an actual change of the bread and wine, he insisted that believers, and only believers, receive the body and blood of Christ, and they do so by faith. Radbertus’ doctrine of the Lord’s Supper was not accepted by all. Various aspects of his teaching were rejected by men such as John Scotus Erigena, Raban Maur (the abbot of the monastery of Fulda), and the imprisoned monk