 Similarly, the defenses of the right belief and worship of the church resided in the bishops, and Protestants theorize that the process of unifying the doctrine of the Church also concentrated power into their own hands (see also Ignatius of Antioch, who advocated a powerful bishop), and made their office an instrument of power coveted by ambitious men.They charge that, through ambition and jealousy, the church has been at times, and not very subtly, subverted from carrying out its sacred aim.For the Reformers, the culmination of this gradual corruption was typified, in a concentrated way, in the office of the Pope who took on ancient titles such as "Pontifex Maximus" and supreme power in the church, which they characterized in its final form as being an usurpatious throne of Satanic authority set up in pretense of ruling over the Kingdom of God.