Lidzbarski writes in his introduction to this book:
“The Mandaeans are the only Gnostic sect that has survived to our time even though it consists of small numbers. It is due to this circumstance that their religious manuscripts remain well preserved and that we know more about them from their own writings than about other sects. Apart from works with educational contents there exists some liturgical collections. In the centre of their cult it stands the baptism in the flowing river and the honour of the occasion when the soul departs from the body in her ascent— their dead mass (requiem). Both liturgies are combined in one work, from which handwritings had already arrived to Europe in early time. This collection is listed in this published book at the first place.