Conversation so far:
What was the eternity of the world about?
The question of the eternity of the world asks whether the world has a beginning in time, or whether it has existed from eternity.
Was there more to the eternity of the world besides the question asking whether or not the world has a beginning in time?
The question of the eternity of the world became a focus of a dispute in the 13th century which conflicted with the view of the Catholic church.

Question: When was he preaching about the eternity of the world?
Self-contained rewrite: When was Averroes preaching about the eternity of the world?