Saint Luke was a physician, a companion of Saint Paul, and one of the four Evangelists. Because of his medical vocation, he is honored as the patron saint of physicians and all who care for the sick. His Gospel begins with a promise to investigate everything carefully and arrange it in an orderly account. Throughout its pages, Luke gives special attention to Christ’s mercy toward the sick, the poor, and people often overlooked. The prayer beneath his portrait follows this example by asking for wisdom, compassion, clear judgment, and steady hands in the work of healing. His image is especially fitting in a medical office, study, or place of prayer.