Generate a hyperrealistic image of the interior of a grand cathedral. In the center of the room, depict a large and gentle flame symbolizing the presence of God, casting a warm and comforting light. The walls of the room are slightly darker, creating a sense of depth and contrast. Despite the darkness, the room is adorned with beautiful architectural details and ornate decorations, emphasizing the solemnity and beauty of the space. Ensure that the lighting highlights the flame as the focal point, creating a sense of reverence and spirituality. Capture the grandeur and serenity of the cathedral, conveying a sense of awe and reverence.