John 7:37-39 - The Promise Of The Spirit
37 On the last day, that great day of the feast, Jesus stood and cried out, "If anyone thirsts, let him come to me and drink. 38 He who believes in me, as the Scripture has said, out of his heart will flow rivers of living water." 39 Now this he said about the Spirit, whom those who believed in him were to receive; for as yet the Spirit had not been given, because Jesus was not yet glorified.