The king had only been testing him, and now, believing in the sincerity of the Elector's intentions, he very much modified his demands. "The distrust," said the king, "which he had shown me when advancing to the relief of Magdeburg, had made me distrustful; his present confidence demands a return. I shall be satisfied if he grants my army one month's pay, and even for this advance I hope to indemnify him." On September 1st, 1631, the princes signed an alliance, and on September 5th the Saxon army joined that of Sweden. Tilly had encamped near Leipzig and had fired on the city. He said to his army, jubilant with the hope of plunder, "Hitherto heretics have never gained a victory in a pitched battle." Gustavus took the opposite course. He assembled all his field officers about him the evening before the battle, and said: "I neither despise our enemies, nor represent the affair as more easy than it is. I do not conceal it; we have before us an experienced, powerful, victorious enemy, who has hitherto, during his long wars, been always triumphant. But the more celebrated this enemy is the greater will be the renown which we shall obtain by conquering him. All honor, praise and glory which our adversaries have acquired during so many years can, with the help of God, be our own within twenty-four hours. On our side is the right. We do not contend for temporal goods, but for the glory and for the word of God; for the true religion, which alone is able to save, hitherto grievously oppressed by the Catholics and which they now intend to entirely destroy. We must not doubt that Almighty God, who, in spite of all resistance, has led us safely through all kinds of dangers, will now grant us His efficient assistance." Then he rode through his camp, cheering with kind words his soldiers, and making each feel that he was indeed an important factor for his king, for his country and for his religion. Munro says the Elector of Saxony and his troops looked as if they were there to have pictures or portraits taken, while the Swedes, who had been on a long march and had slept in a dusty field, looked like servants, and they both looked tame beside the besilvered, begilded and beplumed Imperialists. The Swedish horses looked like ponies beside the gigantic German chargers. The king had on a plain buff-colored suit, a gray hat, with a green plume. In the meantime, Tilly pushed close to Leipzig and promised to leave it like Magdeburg if it did not yield. But conditions were not the same. On September 4th the bombardment began. On the 6th the city sent to offer Tilly a large sum of money in ransom, then capitulated on condition that the Protestant religion should not be suppressed and the garrison be permitted to march out with honors of war. Tilly put three thousand soldiers in the city and determined to await the Swedes and Saxons, with his back protected by the city.