By the first half of the 17th century, the extensive interior decoration had been completed for the two generally contemporaneous "mother" churches, (Sant'Andrea and the Chiesa Nuova), of two major counter-reformation orders, the Theatines and Oratorians. This was not true for the two large Jesuit churches in Rome, which, while rich in marble and stone, remained artistically barren by the mid-17th century. This void would have been particularly evident for Il Gesù with its cavernous blank plaster nave ceiling. Funding and inertia stalled its decoration.