At first, Catholicism was an adjective referring to a virtue of Christianity that was universal. In the Creed drafted at the Council of Nicéa I (AD 351), which today the Orthodox Church as well as the Catholic Church profess: “I believe in the one Church, Holy, catholic and apostolic” .|Catholicism was transmitted to Vietnam from the early 17th century. The kings and mandarins of the Le Dynasty called Catholicism Hoa Lang Giao (ie, the religion of the Portuguese, the religion of the Europeans). Under the Nguyen Dynasty, Catholicism was known as Jainism (also spelled as Catholic), sometimes also called Christianity.|In the Peace Agreement signed between France and the court of King Tu Duc on March 15, 1874, the phrase “Christianity” was used for the first time.|Christianity is a religion that worships God, that is, God, the Creator, the Supreme Being. Judaism also worships God as the Creator, the Supreme Being. Muslims also worship Allah as the Creator, the Most High.