John 14:16–17
16 And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever; 17 Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you.
In the original: πνεῦμα pneuma G4151 — From G4154; a current of air, that is, breath (blast) or a breeze ; by analogy or figuratively a spirit, that is, (human) the rational soul, (by implication) vital principle, mental dispos
See also: John 14:26 · John 15:26 · Ezekiel 36:27 · John 16:7