 A number of early Christian writings written during the centuries immediately following the first Ecumenical Council of 325 mention Thomas' mission.The "Transitus Mariae" describes each of the apostles purportedly being temporarily transported to heaven during the Assumption of Mary.The main source is the apocryphal Acts of Thomas, sometimes called by its full name "The Acts of Judas Thomas", written circa 180–230 AD/CE, These are generally regarded by various Christian religions as apocryphal, or even heretical.