The assembly which was to make this tremendous decision was convoked for the 2nd February, 1077, the feast of the Purification, at Augsburg. Gregory had accepted the invitation of the German potentates without fear; but there was much alarm in Rome at the thought of such a journey--of the passage through rebellious Lombardy, of the terrible Alps and their dangers, and at the end of all the fierce German princes, who did not always keep faith, and whose minds before this time might have turned again towards their native prince. The Pope set out, however, under the guard of Matilda of Tuscany and her army, to meet the escort promised him from beyond the Alps. On the other hand, Henry was surrounded by dangers on every side. He had been compelled to give up his own special friends, excommunicated like himself; he had no arms, no troops, no money; the term which had been allowed him to make his peace with the Pope was fast passing, and the dreadful moment when it would be his fate to stand before his revolted subjects and learn their decision, appeared before him in all its humiliation and dishonour. Already various offenders had stolen across the mountains privately, to make their submission to Gregory. It seemed the only course for the desperate king to take. At length, after much wavering, he made up his mind, and escaping like a fugitive from the town of Spires to which he had retired, he made his way in the midst of a rigorous winter, and with incredible difficulty, across the Alps, with the help and under the guardianship of Adelaide of Susa, his mother-in-law, who, however, it is said, made him pay a high price for her help. He had begged of the Pope to give him audience at Rome, but this was refused: and in partial despair and confusion he set out to accomplish his hated mission somehow, he did not know where or by what means. A gleam of comfort, however, came to Henry on his travels. He was received with open arms in Lombardy where the revolted bishops eagerly welcomed him as their deliverer from Gregory and his austerities: but there was too much at stake for such an easy solution of the matter as this.