The other central light component results from the even illumination of the interior of the arched concrete boards. It is important not only as pleasant, diffuse basic lighting of the church sanctuary. It also characterises the outward appearance of the church at night: almost magically, the light seems to pour out of the gaps of the boards.

The lighting equipment used here are Beamer spotlights and Parscoop wallwashers from the ERCO exterior range installed outside, above the skylights.