Immigrating to the US in 1920, Nikoloff attended college in New York City and received the baptism in the Holy Spirit under the ministry of Robert and Marie Brown at Glad Tidings Tabernacle. He pastured several churches in New York and New Jersey and at the same time attended Bethel Bible Training School in Newark, NJ, graduating in 1924. He then taught at the school until 1926.
Feeling called of God to return to Bulgaria, Nikoloff and his American-born wife, Martha, spent five years (1926-310 evangelizing and pasturing in Bourgas. He also served as he first superintendent of the Evangelical Pentecostal
With the coming of WW2, Nikoloff returned to the United States and served as president of Metropolitan Bible Institute, North Bergen, New Jersey (1941-50), and New England Bible Institute, Framingham, Massachusetts (1950-52). In 1952 he joined the faculty on Central Bible Institute of Springfield, Missouri, where he served (chair of the Department of religious Education in 1954; the Bible department beginning in 1956) until his retirement in 1961 due to ill health.
During his years in the US, Nikoloff earned the B.R.E. and M.R.E. degrees from the Biblical Seminary in New York (now New York Theological Seminary). In 1956 he completed the PhD from New York University; his dissertation is entitled; ?Bogomilism, A Study of the Bulgarian Heresy as and Expression of the Principle of Puritanism.? In recognition of his scholastic record, he received the University?s Founders Day certificate of Achievement.
Nikoloff? publications include two Bulgarian church magazines, several books and tracts, and a songbook in that language. He also worked for five years (1954-59) as editor of the Sunday school quarterly Youth Teacher at the Gospel publishing House. The Nikoloffs had three children.
Nicholas Nikoloff made important contribution to the development of the Pentecostal churches in Bulgaria, the advancement of Pentecostalism in Eastern Europe and the Soviet Union, and training of AG ministers and missionaries.
Burgess, S.M. G. B. McGee Dictionary of Pentecostal and Charismatic
Movements. Zondervan Publishing House. 1993.