Analysis of information sources in references of the Wikipedia article "Origenism" in English language version.
Clement of Alexandria and Origen opposed the use of images.
It is strange that the apocryphal Epistle of Jeremiah is listed without any mention of the book of Baruch, which it followed. The Epistle was often subsumed under Baruch as a sixth chapter. Some scholars surmise that "the Epistle" here may refer to Baruch and the Epistle together. Others suspect that this is a later addition to the list.
Origen failed to include the eucharist among the things that bring forgiveness of sin
Tertullian and Origen warned against the use of images in piety.
Florovsky to his celebrated suggestion that the roots of iconoclasm were Origenist