But the church, under the canon law, must add a penalty to its enforcement and must assume the punishment of offenders within its own jurisdiction. This led to the assumption that all crime is sin, and as its particular function was to punish sin, the church claimed jurisdiction over all sinners and the right to apprehend and sentence criminals; but the actual punishment of the more grievous offenses was usually given over to the civil authority.
_Attempt to Dominate the Temporal Powers_.--Having developed a strong hierarchy which completely dominated the laity, from which it had separated, having amassed wealth and gained power, and having invaded the temporal power in the apprehension and punishment of crime, the church was prepared to go a step farther and set its authority above kings and princes in the management of all temporal affairs. In this it almost succeeded, for its power of excommunication was so great as to make the civil authorities tremble and bow down before it. The struggle of church and empire in the Middle Ages, and, indeed, into the so-called modern era, represents one of the important phases of history. The idea of a world empire had long dominated the minds of the people, who looked to the Roman imperialism as the final solution of all government. But as this gradually declined and was replaced by the Christian church, the idea of a world religion finally became prevalent. Hence the ideas of a world religion and a world empire were joined in the Holy Roman Empire, begun by Charlemagne and established by Otto the Great. In this combination the church assumed first place as representing the eternal God, as the head of all things temporal and spiritual.
In this respect the church easily overreached itself in the employment of force to carry out its plans. Assuming to control by love, it had entered the lists to contend with force and intrigue, and it became subject to all forms of degradation arising from political corruption. In this respect its high object became degraded to the mere attempt to dominate. The greed for power and force was very great, and this again and again led the church into error and lessened its influence in the actual regeneration of man and society.