The Fourth Council of Toledo was held in 633 AD in Toledo, Spain. It was an important assembly of bishops from the Visigothic kingdom, aimed at addressing various theological and administrative issues within the church. The council is particularly noted for its efforts to strengthen the authority of the church and promote the Catholic faith among the Visigoths, who had previously adhered to Arianism. One of the key outcomes of the council was the reaffirmation of the Nicene Creed, which emphasized the belief in the Trinity. Additionally, the council established regulations for church governance and discipline, helping to unify the church's practices across the region.