John 7:37-39 - The Promise Of The Spirit
37 In the last day, that great day of the feast, Jesus stood and cried, saying, "If any man thirst, let him come unto me and drink. 38 He that believeth on me, as sayeth the scripture, 'Out of his belly shall flow rivers of water of life.'" 39 This spake he of the spirit, which they that believed on him should receive. For the holy ghost was not yet there, because that Jesus was not yet glorified.