Rosweyde thought it would be a useful work to publish the texts in their original form. His superiors, to whom he submitted his plan in 1603, gave it their approval, and allowed him to prepare the projected edition, without, however, relieving him of other occupations. At that time Rosweyde was serving as prefect of studies in Antwerp, but was soon sent to St Omer to replace a professor of apologetics who had fallen ill. He did not return to Antwerp until 1606.