Caelestius

Caelestius (or Celestius) was the major follower of the heretical Christian teacher Pelagius and the heresy of Pelagianism, which was opposed to Augustine of Hippo and his doctrine on original sin, and was later declared to be heresy by mainstream Nicene Christianity.

==Development of Caelestius' doctrines== It is believed Caelestius met Pelagius in the late 4th century in the city of Rome. Pelagius emphasized that Christians were required by God to struggle against evil behavior using the teachings of the Bible and the example of the Christian saints (although he also affirmed repeatedly in Church proceedings and in a letter to the pope that grace assisted the will in all good actions).