Following the death of her husband, Theodora served as regent for her son Michael. She overrode Theophilus' ecclesiastical policy and summoned a council under the patriarch Methodius, in which the veneration, but not worship, of icons (images of Jesus Christ and the saints) was finally restored and the iconoclastic clergy deposed. She carried on the government with a firm and judicious hand; she replenished the treasury and deterred the Bulgarians from an attempt at invasion. However, it was during her regency that a vigorous persecution of the Paulician heresy commenced.