The funeral rites over, the artificers were sent to the forest to fell the trees, that engines might be fabricated for the destruction of the city walls.
Angry at the success of the Franks, Satan stirred up the infernal regions, and set loose his friends to work destruction to the Christians. One he despatched to the wizard Idraotes, at Damascus, who conceived the scheme of sending his beautiful niece Armida to ensnare the Christians. In a few days Armida appeared among the white pavilions of the Franks, attracting the attention and winning the love of all who saw her. Her golden locks appeared through her veil as the sunshine gleams through the stormy skies; her charms were sufficiently hidden to make them the more alluring. So attired, modestly seeking the camp of Godfrey, she was met by Eustace, his young brother, and taken to the prince.
With many tears and sighs, she told her pitiful story. She had been driven from her kingdom, an orphan, by the envy and wickedness of her uncle, and had come to ask the Christians to aid her in regaining her rights. Unfortunately for her success, she and her uncle had not calculated on Godfrey's absorption in his divine undertaking. He was proof against her charms, and was determined not to be delayed longer in laying siege to the city. It required the utmost persuasion of Eustace to induce him to permit ten of the Adventurers to accompany her. Armida, though disappointed in Godfrey's lack of susceptibility, employed her time so well while in camp that when she departed with the ten Adventurers chosen by lot, she was followed secretly by Eustace and many others who had not been chosen, but who were madly in love with her.
Before his departure, Eustace, jealous of Rinaldo, whom he was fearful Armida might admire, had persuaded him to aspire to the place of Dudon, to whom a successor must be elected. Gernando of Norway desired the same place, and, angry that the popular Rinaldo should be his rival, scattered through the camp rumors disparaging to his character: Rinaldo was vain and arrogant; Rinaldo was rash, not brave; Rinaldo's virtues were all vices. At last, stung past endurance by his taunts and insinuations, Rinaldo gave the lie to his traducer, and slew him in fair fight. False reports were taken to Godfrey by Rinaldo's enemies; and the ruler determined to punish the youth severely; but he, warned by his friends, escaped from camp and fled to Antioch. To Godfrey, deprived thus of Rinaldo and many of his brave Adventurers, was brought the tidings that the Egyptian expedition was on its way, and that a ship laden with provisions had been intercepted on its way to his camp.
The bold Argantes, weary of the restraint of the siege, sent a challenge to the Christians, saying he would meet any Frank, high-born or low, in single combat, the conditions being that the vanquished should serve the victor. A thousand knights burned to accept the challenge, but Godfrey named Tancred, who proudly buckled on his armor and called for his steed. As he approached the field, he saw among the pagan hosts, who stood around to view the combat, the fair face of Clorinda, and stood gazing at her, forgetful of all else. Otho, seeing his delay, spurred on his horse, and fought till vanquished. Then Tancred woke from his stupor, and, burning with shame, rushed forward. The battle raged until night fell, and the weary warriors ceased, pledging themselves to return on the morrow.
Erminia, shut up in Jerusalem, mourned over the wounds of Tancred. She knew many healing balms, by which, were she with him, she might heal him and make him ready for the morrow's fight; but she was forced to administer them to his enemy instead. Unable to endure the suspense longer, she put on her friend Clorinda's armor and fled to the Christian camp to find her beloved. The Franks, who spied her, supposed her Clorinda, and pursued her; but she succeeded in reaching a woodland retreat, where she determined to remain with the kind old shepherd and his wife who had fled from the disappointments of the court and had here sought and found peace in their humble home. When Tancred heard from his followers that they had driven Clorinda from the camps, he determined to pursue and speak with her. Rising from his bed he sought the forest only to fall into the wiles of Armida, and be lured into a castle, in whose dungeon he lay, consumed with shame at the thought of his unexplained absence from the morrow's combat.
When morning dawned and Tancred did not appear, the good old Count Raymond went forth to meet Argantes. When he was about to overcome his antagonist, an arrow shot from the pagan ranks brought on a general conflict, in which the Christians were successful until a storm, summoned by the powers of darkness, put an end to the battle. The next morning a knight came to the camp of Godfrey to tell of Sweno's defeat and slaughter. He, the sole survivor of the band, had been commissioned by some supernatural visitants to bring Sweno's sword to Rinaldo.
While Godfrey's heart was wrung by this disaster, the camp of Italians, led to suppose by some bloody armor found in a wood that Rinaldo had been treacherously slain with the connivance of Godfrey, accused the chief and stirred up the camp to revolt; but Godfrey, praying to Heaven for strength to meet his enemies, walked through the camp firmly and unfalteringly, unarmed and with head bare, his face still bright with the heavenly light left there by spiritual communion, and silenced the tumult by a few well-chosen words. His arch-accuser Argillan he sentenced to death; the others crept back to their tents in shame.
The Soldan Solyman, driven from Nice at its capture, had joined the Turks, and, spurred on by hate and fury, made a night attack on the Frankish camp. The Franks, saved only by the interposition of the angel Michael, and by the troops just returned, released from Armida's enchantment, fought fiercely, and at dawn put Solyman to flight. By the arts of Ismeno he was conveyed to Jerusalem by a secret way, where he cheered the discouraged Aladine.
Before attempting to storm the city, the Christian troops, by the advice of Peter the Hermit, walked in a long procession to Mt. Olivet, filling the heavens with melody, and there partook of the communion administered by the warrior priests, William and Ademar. The next morning, Godfrey, in the light armor of a foot-soldier, appeared with his barons, prepared for the storm. The troops were arranged carefully, the huge engines were moved forward, and the Franks made a bold attempt against the walls, from the top of which Clorinda aimed her arrows, wounding and slaying many men. Godfrey himself was wounded, but was healed by divine aid, and immediately returned to the field to rally his troops. Night fell, and the contest was deferred until another day.