John 3:9

5 Jesus answered, “Truly, truly, I tell you, no one can enter the kingdom of God unless he is born of water and the Spirit.

6 Flesh is born of flesh, but spirit is born of the Spirit.

7 Do not be amazed that I said, ‘You must be born again.’

8 The wind blows where it wishes. You hear its sound, but you do not know where it comes from or where it is going. So it is with everyone born of the Spirit.”

9 “How can this be?” Nicodemus asked.

10 “You are Israel’s teacher,” said Jesus, “and you do not understand these things?

11 Truly, truly, I tell you, we speak of what we know, and we testify to what we have seen, and yet you people do not accept our testimony.

12 If I have told you about earthly things and you do not believe, how will you believe if I tell you about heavenly things?

13 No one has ascended into heaven except the One who descended from heaven—the Son of Man.

Read all of John 3