Reading A Light to the Gentiles, a classic biography by the renowned spiritual writer and psychologist, Adrian van Kaam, has as much potential to change each reader's life as the light of divine grace changed the life of Venerable Francis Libermann, son of a Rabbi and a Christian convert whose destiny rested in the hands of Divine Providence. It is clear that the author's love for Libermann deeply affected his own understanding of the dynamics of purifying formation, illuminating reformation, and unifying transformation.