JMNT(i)
38 "The person continuously trusting and progressively believing into Me, just as the Scripture says, 'Rivers (or: Floods; Torrents) of living water will continuously flow (or: gush; flood) from out of the midst of his cavity (his innermost being or part; the hollow of his belly; [used of the womb]).'" [cf Isa. 58:11; Ezk. 47:1; Joel 3:18; Zech. 13:1; 14:8]
39 Now this He said about (or: with regard to) the Breath-effect (or: Spirit; Attitude; [other MSS: Holy, or set-apart Spirit; Sacred Wind]) of which (of Whom as a source; [other MSS simple read: which]) they – those trusting and believing into Him – were about to be continuously and progressively receiving. You see, the Holy Spirit (set-apart Breath-effect; Sacred Wind and Attitude) was not yet being One having been given [note: reading with B; with p66c, p75, Aleph, and others: for you see, there was not yet Spirit in existence; D* and three others: for there was not yet a Holy Spirit upon them; Textus Receptus: You see, [the] Holy Spirit was not yet being or existing], because Jesus was not yet glorified (made full of glory or endowed with glory; made to be a manifestation which calls forth praise).