For a long time this parish church was that of the old Benedictine abbey whose secular buildings now house the Gembloux faculty of agronomy.
Inside this huge building there are signs of the ancient richness of the glorious Benedictine period now lost. In the chancel the monks pews still sit in state. A painting depicting the return of the relics of Saint Guibert to Gembloux after his death in Lorraine is worth noting. There are numerous statues of little known saints: Benoit, the founder of the Benedictine order, Guibert of Gembloux and two women, Gertrude and Scolastique. On the walls hang beautiful paintings of the twelve apostles. In the right transept is a 17th century statue named “the good old god” depicting a scourged Christ. In 1653a marvel occurred. Blood flowed from the statue. Popular devotion started and it is said that prayers here lead to miraculous healings.