It was under these circumstances that Gregory determined to bring to an issue the chief question in dispute between Church and State. Hitherto he had said nothing against the practice of lay investiture. Now, however, at the Lenten Synod in 1075, a decree was issued which condemned both the ecclesiastic, high or low, who should take investiture from a layman, and also the layman, however exalted in rank, who should dare to give investiture. The decree had no immediate effect, and at the end of the year Gregory followed it up with a letter to the King, in which he threatened excommunication if before the meeting of the next usual Lenten Synod Henry had not amended his life and got rid of his councillors, who had never freed themselves from the papal ban. [Sidenote: Henry's Answer.] Henry's answer was given at a Synod of German ecclesiastics at Worms. Cardinal Hugh the White, who for personal reasons had turned against Gregory, accused him of the most incredible crimes, and a letter was despatched in which the bishops renounced their obedience. Henry also addressed a letter to the Pope, which quite surpassed that of the bishops in violence of expression. "Henry, King not by usurpation but by the holy ordination of God, to Hildebrand now no apostolic ruler but a false monk." It accused him of daring to threaten to take away the royal power, as if Henry owed it to the Pontiff and not to God: and it concluded by a summons to him to descend from his position in favour of some one "who shall not cloak his violence with religion, but shall teach the sound doctrine of St. Peter." It was nothing new for a Pope to be deposed by a Council presided over by the Emperor. And it is true that the same resolution, transmitted by delegates from Worms, was adopted at Piacenza by a Synod of Italian bishops. But on this occasion the sentence was uttered by an assembly of exclusively German bishops, presided over by a King who was not yet crowned Emperor. If such a sentence was to be effective, Henry should have followed it up by a march to Rome with an adequate army. He merely courted defeat when he gave the Pope the opportunity for a retort in kind. Anathema was the papal weapon, and while the King's declaration might even be resented by other rulers as an attempt to dictate to them in a matter of common concern to all, the papal sentence on the King was regarded by all as influencing the fate, not of the King only, but of all who remained in communication with him, if not in this world, at any rate in the world to come. Moreover, in this particular case, while no one believed the monstrous charges against Gregory, there was sufficient in Henry's past conduct to give credibility to anything that might be urged against him. [Sidenote: Gregory deposes Henry.]