Trinity
From dKosopedia
The Holy Trinity is a Christian doctrine associated with the Nicene Creed adopted in a church council ca. 325 CE, which states God consist of God the Father, God the Son (Jesus Christ) and the Holy Spirit, who are one God in a juxtoposition of one God and three parts which is a holy mystery. The Creed also firmly established as a holy mystery the aspect of Jesus Christ as both fully human and fully divine.
Trinitarian doctrine developed in response to various other views of the divinity of Jesus Christ in the early church which are now viewed as heresies by the Roman Catholic Church and many of its offshoots and sister churches such as the Orthodox Church. Unitarians and Muslims view Jesus Christ as a good man and a prophet, but not as a diety. Some now heretical factions of the early church viewed Jesus Christ as wholely divine.