Joh 3:8 "The wind blows where it wishes, and you hear the sound of it, but cannot tell where it comes from and where it goes. So is everyone who is born of the Spirit."
The Lord Jesus just told Nicodemus: "You must be born again" in verse 7. This may seem puzzling to him. And so the Lord Jesus used the illustration of the wind to describe the work of the Spirit in the new birth.
The presence of the wind is detectable and recognizable. We could readily perceive its presence. The howling sound it brings. The movements of trees and other objects as it passes by. Yet its movements and direction are incomprehensible and puzzling to a common man. It is invisible. It is untraceable. Its ways are beyond us.
It's just the same with the new birth. The new birth or being born again is incomprehensible, we cannot fully grasp its procedures, workings and modes of operation, though it is recognizable by its effects.
How in the world could, for example, a hopeless drunkard, become a transformed man? What went on inside him, we cannot fully explain. But nonetheless, the effect is there---he is a changed man.
