thou hearest the sound thereof

In the Gospel of John 3,8 Christ gives information about the freedom of the Spirit:
“The wind blows where it wills, and you hear the sound of it, but you do not know where it comes from or where it goes. So is everyone who is born of the Spirit.”

- A ventilation unit with sufficient capacity (approx. 3000m3) is installed near the church and connected to the church by means of invisible hoses. The ventilation must not be audible. At intervals of approx. 5-10 minutes, the air direction is changed so that negative pressure and positive pressure alternate in the interior of the church. This creates draughts and gusts of air that pull visitors in or push them out when they enter or leave the church. If the door is closed, the draught is not noticeable. A draught at the door may be audible. When the door is opened, elements that are not permanently installed move slightly in the room: the curtains next to the pulpit, the altar hanging, the star and nave, open book pages, etc.

With this minimal intervention, the invisibility, presence and unpredictability of the spirit are to take on a physically tangible form and be symbolized. Man is also free and yet subject: He can allow himself to be pulled, he can be pulled, he can be pushed and pushed away, he can stay and go, he can resist and allow himself to be carried. He is, as Luther says, a free lord over all things and subject to no one, and at the same time a servant of all things and subject to everyone. Whether it is Christ who liberates him to freedom, and who at the same time can also call him to bondage in the freedom of the spirit, this may be the highest level of human freedom.