Our homily for the Commemoration of All Souls (2nd November) – why does the Catholic Church believe in Purgatory?

Fr Guy de Gaynesford explains the basis of the Catholic belief in Purgatory in this homily for the Commemoration of all the Faithful Departed (All Souls Day)

Mass Readings:  Isaiah 25: 6-9, Psalm 26, Romans 5:5-11, Matthew 11: 25-30