Roger E. Olson, Christopher Alan Hall (Eerdmans. ] Olson, Roger E.; Hall, Christopher Alan (2002). The Trinity. Wm. B. Eerdmans. стр. 15. ISBN978-0-8028-4827-7.)
von Harnack, Adolf (1. 3. 1894). „History of Dogma”. Приступљено 15. 6. 2007. „[In the 2nd century,] Jesus was either regarded as the man whom God hath chosen, in whom the Deity or the Spirit of God dwelt, and who, after being tested, was adopted by God and invested with dominion, (Adoptionist Christology); or Jesus was regarded as a heavenly spiritual being (the highest after God) who took flesh, and again returned to heaven after the completion of his work on earth (pneumatic Christology)”