John 7:38 in the King James Version
He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water.
Context
37 Now on the last and greatest day of the feast, Jesus stood and cried out, “If anyone is thirsty, let him come to me and drink!
38 He who believes in me, as the Scripture has said, from within him will flow rivers of living water.”
39 But he said this about the Spirit, which those believing in him were to receive. For the Holy Spirit was not yet given, because Jesus wasn’t yet glorified.