Rev. Dr. E. W. Clark from American Baptist Foreign Mission Society was responsible for the introduction of “The Gospel” among the Aos in Particular and Nagas in general.

Thus, the American Baptist Foreign Mission Society (presently called “International Ministries”)  introduced the Christianity among the Aos of Nagaland and subsequently in all over Nagaland. They were also responsible for the introduction of “Roman Script” and Modern Education. Prior to this, Nagas had no script of their own. The oral tradition says that it lost in the process of their nomadic life.

To the amazement of the Nagas, Churches multiplied like wild-fire, reaching all the tribes in Nagaland within remarkably few years. For the purpose of strengthening the Church, the Ao Baptist Church Association (ABAM) was organized in March 1897.

Initially ABAM pioneered the introduction of  Churches in the following Naga Tribes:- Lotha, Sumi, Sangtem, Chang, Konyak, Yimchunger, Khiamniungan, Phom and some parts in North-East India.