[W]ith leaven banished from his house on the Passover, the Israelite is helped to realise the purifying and ennobling effects which redemption wrought for his ancestors. The demoralisation born of their servitude was at an end; the ransomed people went forth to a sane and wholesome life, to a life of brave and large ideals.

Morris Joseph reads the Passover ban on leaven (ḥametz) as more than a ritual food-law: it becomes a moral and psychological exercise. Removing leaven—often associated in Jewish homiletics with moral “ferment” or corruption—helps the celebrant imaginatively re-enter the Exodus story and grasp redemption as an inner transformation. The Israelites’ liberation ends not only physical bondage but also the “demoralisation” produced by servitude; freedom is pictured as a return to sanity, health, and ethical aspiration. The quote thus frames Passover as a pedagogy of character: a yearly discipline that links national memory to personal purification and to the cultivation of “brave and large ideals.”