The treatise presents a systematic defense and exposition of ancient ritual theology and theurgy, arguing for a metaphysical hierarchy that begins with an ineffable supreme principle and proceeds through divine intelligences, souls, and material beings. It explains how ritual, symbols, and sacred rites enable contact between human soul and higher powers, combining philosophical argument with practical descriptions of ceremonial procedure and symbolic meaning. The author frames these doctrines within a Neoplatonic perspective, addresses skeptical objections, and traces continuities with earlier philosophical traditions while emphasizing rites as means for spiritual purification and ascent.