While the Council of Nicaea affirmed the validity of the use of sacred images, the Council of Trent defined the role of art in service to the Church. Still, some Protestant circles would not accept sacred art on any terms and a new wave of iconoclasm stripped many churches of their rich heritage of traditional iconography. But the Council of Trent paved the way for a new generation of artists to work with the Church on sacred imagery that would appeal to the people and be faithful to magisterial teaching. This came to be known as Baroque, or the art of the counter-reformation.