Whilst these things were passing in the Christian camp, the most profound silence reigned over the walls of Jerusalem; nothing was heard but the voices of the men who, from hour to hour, from the tops of the mosques of the city, called the Mussulmans to prayer. The infidels came in crowds to their temples to implore the protection of their prophet, and swore by the mysterious stone of Jacob to defend a city which they called the _House of God_. The besieged and the besiegers were stimulated by an equal ardour to fight and to shed their blood, the former to preserve, and the latter to conquer a city which both held sacred. The hatred which animated them was so violent, that during the whole siege no Mussulman deputy came into the Christian camp, nor did the Christians deign to summon the garrison to surrender. Between such enemies the shock must necessarily be terrible, and the victory implacable. The leaders of the Christian army being assembled to decide upon the day for attacking the city, it was resolved to take advantage of the enthusiasm of the pilgrims, which was at its height, and to press forward the assault, the preparations for which were rapidly going on. As the Saracens had raised a great number of machines on the sides of the city most threatened by the Christians, it was agreed that they should change the dispositions of the siege, and that the principal attack should be directed towards the points where the enemy had made the least preparations for defence. During the night Godfrey removed his quarters eastward, near to the gate of Cedar, and not far from the valley in which Titus was encamped when his soldiers penetrated into the galleries of the temple. The rolling tower, and the other machines of war which the duke of Lorraine had caused to be constructed, were transported with incredible difficulty in face of the walls he intended to attack. Tancred and the two Roberts got ready their machines, between the gate of Damascus and the angular tower, which was afterwards called _the tower of Tancred_.[169] When the Saracens, at daybreak, saw these new dispositions, they were seized with astonishment and affright. The Crusaders might have taken profitable advantage of the alarm which this change created in the enemy, but upon steep ground it was difficult to bring the towers up close to the walls. Raymond in particular, who was charged with the attack on the south, found himself separated from the rampart by a ravine, which it was necessary to have filled up. He immediately made it known, by a herald-at-arms, that he would pay a denier to every person who should cast three stones into it. A crowd of people instantly flew to second the efforts of his soldiers; nor could the darts and arrows, which were hurled like hail from the ramparts, at all relax the ardour and zeal of the assailants. At length, at the end of the third day, all was finished, and the leaders gave the signal for a general attack.