John 3:8

3:8 The wind blows wherever it will, and you hear the sound it makes, but do not know where it comes from and where it is going. So it is with everyone who is born of the Spirit.”

John 3:10

3:10 Jesus answered, “Are you the teacher of Israel and yet you don’t understand these things?

tn The same Greek word, πνεύματος (pneumatos), may be translated “wind” or “spirit.”

sn Again, the physical illustrates the spiritual, although the force is heightened by the word-play here on wind-spirit (see the note on wind at the beginning of this verse). By the end of the verse, however, the final usage of πνεύματος (pneumatos) refers to the Holy Spirit.

tn Grk “Jesus answered and said to him.”

sn Jesus’ question “Are you the teacher of Israel and yet you don’t understand these things?” implies that Nicodemus had enough information at his disposal from the OT scriptures to have understood Jesus’ statements about the necessity of being born from above by the regenerating work of the Spirit. Isa 44:3-5 and Ezek 37:9-10 are passages Nicodemus might have known which would have given him insight into Jesus’ words. Another significant passage which contains many of these concepts is Prov 30:4-5.