The first volume, for instance, contains five books treating successively of the Cross on which Jesus Christ died, of images of the cross, of apparitions of the Holy Cross, of the sign of the cross, and of the spiritual cross.
For example, the initial volume includes five volumes that explore different aspects of the cross, including the one on which Jesus Christ was crucified, images of the cross, apparitions of the Holy Cross, the sign of the cross, and the spiritual cross.