Over the next half-century, Athanasius defended and refined the Nicene formula. By the end of the fifth century, the doctrine of the Trinity had taken essentially the form it has today. The Nicene Creed was originally written in Greek. Its principal liturgical use is in the Eucharist in the West and in both Baptism and the Eucharist in the East. The following text has the additions used only by the Western Church in brackets: I believe in one God the Father Almighty; maker of heaven and earth, and of all things visible and invisible. And in one Lord Jesus Christ, the only begotten Son of God, begotten of the Father before all worlds [God of God], Light of Light, very God of very God, begotten, not made, being of one substance [essence] with the Father; by whom all things were made; who, for us men and for our salvation, came down from heaven, and was incarnate by the Holy Ghost of the Virgin Mary, and was made man; and was crucified also for us under Pontius Pilate; he suffered and was buried; and the third day he rose again, with glory, to judge both the quick and the dead; whose kingdom shall have no end.