John 7

37 On the last and greatest day of the feast, Jesus stood up and called out in a loud voice, “If anyone is thirsty, let him come to Me and drink. 38 Whoever believes in Me, as the Scripture has said: ‘Streams of living water will flow from within him.’” 39 He was speaking about the Spirit, whom those who believed in Him were later to receive. For the Spirit had not yet been given, because Jesus had not yet been glorified.

John 6

56 Whoever eats My flesh and drinks My blood remains in Me, and I in him. 57 Just as the living Father sent Me and I live because of the Father, so also the one who feeds on Me will live because of Me. 58 This is the bread that came down from heaven. Unlike your fathers, who ate the manna and died, the one who eats this bread will live forever.”

John 5

39 You pore over the Scriptures because you presume that by them you possess eternal life. These are the very words that testify about Me, 40 yet you refuse to come to Me to have life.