Non-Catholic Christians

WITHIN about one-half century, a very considerable body of religionists have arisen in the United States, who, rejecting all names, appellations, and badges of distinctive party among the followers or Christ, simply call themselves CHRISTIANS.

...this people originated from the three principal Protestant sects in America. The branch at the south, from the Methodists; the one at the north, from the [165] Baptists, and the one at the west, from the Presbyterians. The three branches rose within the space of eight years, in sections remote and unknown to each other, until some years afterwards...

The adopting of the Holy Scriptures as their only system of faith, has led them to the study of shaping their belief by the language of the sacred oracles. A doctrine, which cannot be expressed in the language of inspiration, they do not hold themselves obligated to believe. Hence, with very few exceptions, they are not Trinitarians, averring that they can neither find the word nor the doctrine in the Bible. They believe "Lord our Jehovah is one Lord," and purely one. That "Jesus Christ is the only begotten Son of God." That the Holy Ghost is that divine unction with which our Saviour was anointed.

Rev. David Millard, History of all the religious denominations in the United States, 1848.