An Interesting Reference in Severus

So when Origen, whom Demetrius had excommunicated, saw that the Church had rejected him, he went to the Jews, and expounded for them part of the Hebrew books, in a new fashion; and he concealed the prophecies which they contain of the Lord Christ, so that when he came to the mention of the thicket in which the ram of Abraham, the Friend of God, was caught by its horns, which the Fathers interpret as a type of the wood of the Cross, Origen even concealed and abandoned this interpretation.