A major theme in the poetry and prose of the Bock saga is the exposure of the ancient fertility cultures of antiquity, whose legal traditions – based on inheritance – where contradictory to the interest of foreign invaders and illegal regimes. Consequently, to handle an occupied population, the religions of the Middle Ages exercised an absolute repression of all the old fertility rituals, since they required and recreated the memory of the old codexes. Consequently, the heathen traditions of sexual visibility and identification was massively condemned and sanctioned with the most severe of punishments. One such heathen tradition was that of drinking the "divine vine" or the "water of wisdom", which literally refers to the female sap (ejaculate) and the male sperm.