An apokatastasis is the concept of an apocalypse leading to the remaking of the world rather than a final judgement, or the doctrine that all souls will enter heaven or paradise, a form of heresy denied in the sixth century.
The term 'Catholic' means universal. Catholic church is universal because the fullness of salvation is revealed in catholic church. it subsist in Catholic church through the person of Jesus Christ. The church is body of Christ and we all are members.
Rafael Cruz-Emeric, a theologian and scholar, has written several books related to theology and Christian faith. Some of his notable works include "The Christian Doctrine of Apokatastasis: A Critical Assessment from the New Testament to Eriugena" and "Christianity and the Cultures: The Challenge of the Pluralism."
Universalism teaches that all people will be saved. However it is not possible to categorize all universalists into one group. Universalists vary in belief when it comes to Biblical teaching. They obviously believe what the Bible teaches about sin and salvation and the atoning death of Jesus Christ. BUT......some universalists say that it is through the atonement of Jesus that all will ultimately be reconciled to God. Some say that all will go to heaven sooner or later, whether or not they have trusted in or rejected Jesus as saviour during their lifetime. This universal redemption will be realized in the future where God will bring all people to repentance. Some believe God is one person, some believe in the Trinity, some believe Jesus is a creation ie they deny the deity of Christ. Other universalists tend toward a new age concept of man's divinity.
Most likely because religion is big business, and they don't want competition; the RCC pointing out heresy is pretty much the height of hypocrisy, with apologies to the many spirit-filled Catholics.