God alone, who calls man to deeper thought and to more humble probing, can fully and with complete certainty supply an answer to this questioning. Atheism must be countered both by presenting true teaching in a fitting manner and by the full and complete life of the Church and of her members. For it is the function of the Church to render God the Father and his incarnate Son present and as it were visible, while ceaselessly renewing and purifying herself under the guidance of the Holy Spirit. This