The classicism continues on the interior.

The nave looking west toward the rear of the church

The decoration of each ceiling segment further illustrate Borromini's mastery of sculpture and light.

A fresco in the chancel from the book of Revelation with the enthroned Christ on rainbows surrounded by angels with the sword and olive branch from his mouth.

While Christ is enthroned above the rivers of living water beneath him are the faithful as well as St. Paul and associated apostles and martyrs. However in the right side mosaics (unshown) are General Grant and Abraham ...

From this pulpit Dominie Hendreck De Cock preached a dordtian orthodoxy which with aspersions on more moderate fellow clergy of the state church resulted in conflict, his deposition, and leadership of a group of separatists.

The serpentine columns and bas relief sculpture which comes forward out of the frame is a wonderful example of the baroque.

The side aisles reveal Borromini's ability to use light to become part of the sculptural element.

The collonaded nave was usual practice until the Renaissance.

Behind the residential façade, on an upper floor, was this church interior with balcony.