John 7:38-39

38Whoever believes in me, as Scripture has said, rivers of living water will flow from within them.” Or me. And let anyone drink 38 who believes in me.” As Scripture has said, “Out of him (or them) will flow rivers of living water.”

39By this he meant the Spirit, whom those who believed in him were later to receive. Up to that time the Spirit had not been given, since Jesus had not yet been glorified.