On the last day, the climax of the festival, Jesus stood and shouted to the crowds, "If you are thirsty, come to me!
If you believe in me, come and drink! For the Scriptures declare that rivers of living water will flow out from within."
(When he said "living water," he was speaking of the Spirit, who would be given to everyone believing in him. But the Spirit had not yet been given, because Jesus had not yet entered into his glory.)