After the Diets of Nuremberg failed to accomplish the goal of arresting Luther, in 1526, at the First Diet of Speyer it was decided that until a General Council could meet and settle the theological issues raised by Martin Luther, the Edict of Worms would not be enforced and each Prince could decide if Lutheran teachings and worship would be allowed in his territories. In 1529, at the Second Diet of Speyer, the decision the previous Diet of Speyer was reversed — despite the strong protests of the Lutheran princes, free cities and some Zwinglian territories. These states quickly became known as Protestants. At first, this term "Protestant" was used politically for the states that resisted the Edict of Worms. Over time, however, this term came to be used for the religious movements that opposed the Roman Catholic tradition in the 16th century.