Know thou that every man is either empty or full. For if he has not the Holy Spirit, he has no knowledge of the Creator; he has not received Jesus Christ the Life; he knows not the Father who is in heaven; if he does not live after the dictates of reason, after the heavenly law, he is not a sober-minded person, nor does he act uprightly: such an one is empty. If, on the other hand, he receives God, who says, “I will dwell with them, and walk in them, and I will be their God,” such an one is not empty, but full.
Reproduced in full. Translation: Ante-Nicene Fathers, vol. 1 (Roberts and Donaldson, 1885), public domain (Public domain).