That’s not the example I was asking for. I want a belief they have that is not from scripture or differs according to their understanding of scripture.
Study all the various heresies that existed in the past and keep coming back in different forms: Adoptionism, Apollinarism, Arianism, Docetism, Pneumatomachians, Macedonians or, Monarchianism, Eutychianism, Monophysitism or, Monothelitism, Nestorianism, Patripassianism, Psilanthropism, Sabellianism, Gnosticism..
The point is they argue from scripture just as you do.