A Christadelphian Video: Description: A consideration of the institution, historical occurrences and spiritual significance of the seven-day feast which follows the Passover. Leaven is likened to sin and especially hypocrisy and pride. Just as the Israelites were to purge leaven from their land at this time, so believers must purge sin and its corrupting influence from their lives. They are ultimately made unleavened by the incorruptible, true bread of life, the Lord Jesus Christ, whom this feast prefigures.