The Concept of Holiness (1961) examines one of the most distinctively religious concepts in the sphere of Hebrew and Christian belief. The intimate connections between this concept and the associate notions of fear, power, separatedness, wholeness and goodness are carefully unfolded, and the analysis shows that in none of its connections can holiness be fairly understood unless reference is made to the key-concept of divine personality. After giving a suggestive philosophical account of this key-concept by linking it with the notion of a 'perfect vision', the author shows how the concept of holiness in its manifold connections is thereby illuminated.