John 7:39

τοῦτο … ἐδοξάσθη, for these words apparently refer to Pentecost, the initial outpouring of the Spirit, when it once for all became manifest that the Spirit's presence did not turn men's thoughts in upon themselves, and their own spiritual anxieties and prospects, but prompted them to communicate to all men the blessings they had received. From the little group in the upper room “rivers” did flow to all. But the appended clause, οὔπω γὰρ ἦν Πνεῦμα Ἅγιον, is difficult. The best attested reading (see critical note) gives the meaning: “The Spirit was not yet, because Jesus was not yet [οὔπω, not οὐδέπω] glorified” ἐδοξάσθη with John signifies the entire process of glorification, beginning with and including His death (see chap. John 12:23; John 12:32-33); but especially indicating His recognition by the Father as exalted Messiah (see chap. John 17:1; John 17:5; John 13:31). Until He thus became Lord the Spirit was not given: and the gift of the Spirit at Pentecost was recognised as the grand proof and sign that He had reached the position of supremacy in the moral universe. (See especially Acts 2:32-33.) The Spirit could not be given before in His fulness, because until Christ no man could receive Him in His fulness. Christ was the lens in whom all the scattered rays were gathered. And it is always and only by accepting Christ as perfect humanity, and by finding in Him our norm and ideal, that we receive the Spirit. It is by the work of the Spirit on the human nature of Christ that we are made aware of the fulness and beauty of that work. It is there we see what the Spirit of God can make of man, and apprehend His grace and power and intimate affinity to man.