Leflon continues to describe the impression Eugene made as a preacher:
Everything about the young priest combined to make a strong impression. His stature, his grand manner, his flashing dark and deep-set eyes, the rich resonance of his voice, at times soft and tender, and at other times sounding forth like the trumpets of Judgment Day, utilizing all its registers with a restful variety and with striking contrasts. Finally, the Provencal tongue which he handled superlatively offered him all its resources of colorful imagery, sweeping periodic sentences and musical harmonies.
This explains his sway over the most varied classes which he never failed to captivate and hold in his grip.
J. Leflon, Eugene de Mazenod, Bishop of Marseilles, Founder of the Oblates of Mary Immaculate, 1782 – 1861, Volume II, chapter 4