In the fourth episode of "7 Vices & 7 Virtues: A Lenten Journey of Conversion," Fr John explores the struggle between lust and purity, emphasising the sanctity of sexuality and the power of grace to foster chastity. He draws parallels between safeguarding our spiritual lives and protecting valuable assets, underscoring the need for practical measures like reconciliation, Eucharistic adoration, and the guidance of saints to overcome societal pressures and personal temptations. This episode is a guide to pursuing purity of heart and the divine presence through a virtuous life.