The Treatise on the Passover was written around AD 245. Its central insight is that the Passover is not a figure or type of the passion of Christ, but a figure of Christ himself. The Dialogue with Heraclides was written between AD 244 and 249. It is the record of an unknown meeting—probably a synod—of bishops called to discuss matters of belief and worship. Both pieces come from the last decade of Origen’s ministry, when he was at the height of his powers.