The war between Henry IV and Gregory VII worried the query of who was given to hire local church officials. Henry believed that, as king, he had the proper to hire the bishops of the German church. This turned into referred to as lay investiture. Pope Gregory, on the opposite hand, angrily adversarial this concept due to the fact he desired the strength for himself. He replied to the emperor’s tries to call new bishops by excommunicating Henry. In addition, Gregory used an interdict to launch the emperor’s topics from their feudal duties of loyalty to their leader. Pope Gregory was clever and devout.