Armenian Apostolic Church – The Armenian Apostolic Church (Armenian: Հայ Առաքելական Եկեղեցի, romanized: Hay Aṙak’elakan Yekeghetsi)[note 1] is the national church of the Armenian people. Part of Oriental Orthodoxy, it is one of the most ancient Christian communities.[3] The Kingdom of Armenia was the first state to adopt Christianity as its official religion under the rule of King Tiridates in the early 4th century.[4][5] The church originated in the missions of Apostles Bartholomew and Thaddeus in the 1st century, according to tradition.

Armenian Apostolic Church – Wikipedia

https://en.wikipedia.org/wiki/Armenian_Apostolic_Church

The Armenian Apostolic Church (Armenian: Հայ Առաքելական Եկեղեցի, romanized: Hay Aṙak’elakan Yekeghetsi)[note 1] is the national church of the Armenian people. Part of Oriental Orthodoxy, it is one of the most ancient Christian communities.[3] The Kingdom of Armenia was the first state to adopt Christianity as its official religion under the rule of King Tiridates in the early 4th century.[4][5] The church originated in the missions of Apostles Bartholomew and Thaddeus in the 1st century, according to tradition.