Filioque

The Filioque is a Christian theological addition to the Nicene Creed, stating that the Holy Spirit proceeds from both the Father and the Son, instead of only from the Father. This phrase originated in Western Christianity and was added to clarify the Spirit's relationship within the Trinity. The Eastern Orthodox Church objected, arguing that it alters the original doctrine and its authority, leading to a significant theological dispute. The issue highlights differences in understanding the nature of the Trinity and has historically contributed to the division between Western (Roman Catholic) and Eastern (Orthodox) Christianity.