Complex sentence: It was commissioned and authorized by the Catholic hierarchy of the Netherlands, and its lead author was Piet Schoonenberg, S.J., a professor of dogmatic theology at the Catholic University of Nijmegen.
Split into simpler sentences: It was commissioned and authorized by the Catholic hierarchy of the Netherlands. Its lead author was Piet Schoonenberg, S.J., a professor of dogmatic theology at the Catholic University of Nijmegen.