Theotokos
Theotokos is a title used for Mary, mother of Jesus, used particularly in Eastern Christianity since the 3rd Century, though many on social media claim it was used from the beginning.
The claim comes from the belief that all things Catholic came from the beginning and were preserved by tradition. It is difficult to picture the fisherman Peter wearing the Phonician fish hat and being carried about on a litter.
The reasoning for the title for Mary is that she is the mother of Jesus; Jesus is God, so Mary is the mother of God. They also use Eve as a type of Mary, who was called 'mother of all living'.
The doctrine is inescapably chained to the Catholic doctrines of the hypostatic union, immaculate conception, and the kenosis. While many Evangelicals appeal to church fathers as support when it suits them for their flavor of Christianity, I do not. They were Nicloatains who lost their first love and adopted the doctrines of Balaam and the Judaisers.
Jesus is the incarnation, the physical body, taken by the creator. The Hebrew letters 'kof' כ and 'nun' give more details than are generally included in the debates. The kof says that he was fully God and fully man BY NATURE. The nun says that he was partially God and partially man BY CHOICE.
The doctrine of hypostatic union asserts that Jesus is both God and man. If left there, it is a perfectly fine definition. But the Greeks always have to expand upon things. In practice it means that Jesus was fully aware of his deity, even as a child. This is where, in practice, they invent myths of Jesus as a baby flying and changing his toy birds into living birds.
Evangelicals usually reject the myths, however some keep the myth that the baby was fully aware of his deity. More keep the myth that he used his divinity, particularly his omniscience, from time to time. Most attribute the miracles to his own divinity. This is all mythology.
Those who lean the other way, suggesting that Jesus was solely a man, are not considered Christian, having crossed a line of orthodoxy.
The issue is resolved by the 'mystery hidden from the beginning'; by the hidden layer of scripture. We have more information than has been used in the debates.
The claim of Ph 2:7 is that he 'emptied himself'. We know that he was before the beginning, he was God with God. John 1:1. We know he was born of Mary.
