He was called there to combat the unitarian christology of Beryllus, bishop of Bostra, and to clear up certain eschatological questions.
This was no isolated phenomenon; for in every progressive period of the history of religion we have on the one side the doctrine of God advancing in depth and fulness: on the other we have cosmological, eschatological and other survivals, which, however justifiable in earlier stages, are in unmistakable antagonism with the theistic beliefs of the time.
The eschatology of a nation - and the most influential portion of Jewish and Christian apocrypha are eschatological - is always the last part of their religion to experience the transforming power of new ideas and new facts.
Discipline; and the third part is eschatological and deals with the second Advent.
The most remarkable part of the book is the eschatological picture with which it closes; and the way in which the plague of locusts appears to be taken as foreshadowing the final judgment - the great day or assize of Yahweh, in which Israel's enemies are destroyed - is so unique as greatly to complicate the exegetical problem.