The article focuses on Jamblichus’ concept of “nothingness” in comparison to Augustine’s humility as turning-point and conditions for the soul’s ascent to the divine and/or for salvation. It claims that both authors respond to specific teachings of Porphyry, who thus appears as something like a common enemy, and can help explain certain similarities between the Hellenic theurgist and the Catholic bishop, notwithstanding other profound differences between their philosophical views on the human person and its relation to the divine.