The wind{The same Greek word (pneuma) means wind, breath, and spirit.} blows where it wants to, and you hear its sound, but don't know where it comes from and where it is going. So is everyone who is born of the Spirit."
So is every one ... - Everyone that is born of the Spirit is, in some respects, like the effects of the wind. You see it not, you cannot discern its laws, but you see its effects,” and you know therefore that it does exist and operate. Nicodemus’ objection was, that he could not “see” this change, or perceive “how” it could be. Jesus tells him that he should not reject a doctrine merely because he could not understand it. Neither could the “wind” be seen, but its effects were well known, and no one doubted the existence or the power of the agent. Compare Ecclesiastes 11:5.