The Creed doesn't itemize every part of the Catholic Faith. Obviously, that was never the intention. Its focus was to combat Arianism, hence, the emphasis on the Trinity-One God, the Incarnation, Jesus Christ's (two) natures, and the Holy Spirit proceeding from the Father and Son. But because something isn't specifically mentioned in the Creed doesn't mean you don't have to believe it; and the Creed does define that there is no salvation outside the Catholic Faith (to include valid Sacraments and belief in transubstantiation). The Newchurch teaches religious indifferentism and polytheism, which is a violation of the First Commandment. There is strong argument for their "sacraments" being invalid, too. Newchurch is not Catholic and doesn't adhere to the Athanasian Creed. The protestants also fail the Creed for the aforementioned reasons and not believing in the true presence of Jesus Christ - Body, Soul & Divinity - in the Eucharist.