Ge'ez language
Like the other Eastern Catholic Churches, the Eritrean Catholic Church is in full communion with the Holy See. It holds to the Christological definition taught at the Council of Chalcedon and accepts the universal jurisdiction of the Pope. These points distinguish it from the Eritrean Orthodox Tewahedo Church, which is an Oriental Orthodox church comprising most Christians in the country. Like the Eritrean Orthodox Tewahedo Church, the Eritrean Catholic Church follows the Ethiopic liturgical rite in the Ge'ez language, a Semitic language which fell out of common use several centuries ago. This rite is based on the Coptic Church liturgy.