When, therefore, Sigismund returned to claim the throne he found that Lutheranism was entrenched safely once more, and that even the most moderate of the bishops appointed by his father must be reckoned with as opponents. The clergy united with Duke Karl in stirring up the people against him. In these conditions he was forced to abandon his projects of reform, and to entrust his uncle with the administration of Sweden when he himself was obliged to return to Poland. While Sigismund was engaged in Poland, the regent conducted a most skilful campaign, nominally on behalf of Protestantism, but in reality to secure the deposition of Sigismund and his own election to the throne. In the Diet of Suderkoping (1595) Sigismund was condemned for having bestowed appointments on Catholics and for having tolerated the Catholic religion in his kingdom of Sweden, and it was ordered that all who professed the doctrines of Rome should abandon their errors within six months under pain of expulsion from the country. The Archbishop of Upsala made a visitation of the churches, during which he ordered that all those who absented themselves from the Lutheran service should be flogged in his presence, that the pictures, statues, and reliquaries should be destroyed, and that the liturgy introduced by John III. should be abolished. The greatest violence was used towards the supporters of King Sigismund, most of whom were either Catholic or at least favourably inclined towards Catholicism. Enraged by a decree that no edict of the king should have any binding force unless confirmed by the Swedish Diet, and driven to desperation by the tyranny and oppression of the regent, some of Sigismund's followers raised the standard on behalf of their king, and Sigismund returned to Sweden with an army of five thousand men. He found himself opposed by the forces of the regent against whom he was at first successful, but in his treatment of his uncle and his rebel followers he showed himself far too forgiving. In return for his kindness, having strengthened themselves by a large army they forced him to submit to the decision of a national Assembly to be held at Jonkoping (1599). At this meeting Duke Karl accused the king of endeavouring to plunge Sweden once more into the errors from which it had been rescued by the reformers. In May of the same year a resolution was passed declaring that the king had forfeited the allegiance of his subjects unless he yielded to their demands, and more especially unless he handed over his son and heir to be reared by the regent as a Protestant. Many of his supporters, including nine members of the Council of State, were put to death. Finally in 1604 Sigismund was formally deposed, and the crown was bestowed on his uncle, Duke Karl, who became king under the title of Charles IX. Protestantism had triumphed at last in Sweden, but even its strongest supporters would hardly like to maintain that the issue was decided on religious