 So that now Easter always falls on a Sunday, and although the resurrection of Jesus is a historical event of huge importance, there is no biblical precedent for making Easter a special day of celebration.The Watch Tower Bible and Tract Society and its precursor organization, Zion's Watch Tower Tract Society, considers the Great Apostasy to have properly begun before the death of the last Apostle, along with the warning signs and precursors starting shortly after Jesus' ascension.Jehovah's Witnesses consider adoption of the Trinity—which they allege is based on a specious application of Greek Platonic and sophistical philosophy and is a violation of the Scriptural precepts set forth beginning in the Law of Moses—as a prime indicator of apostasy.