HOLINESS, THE ONLY ONE THING NECESSARY. 6 min read Holiness Little Things HOLINESS, THE ONLY ONE THING NECESSARY. catholicsstrivingforholiness June 12, 2022 HOLINESS, THE ONLY ONE THING NECESSARY. Porro unum est necessarium, our Lord said. Only one thing is... Read More Read more about HOLINESS, THE ONLY ONE THING NECESSARY.