"The wind blows wherever it pleases. You hear its sound, but you cannot tell where it comes from or where it is going. So it is with everyone born of the Spirit.”
Wind and Spirit share some of the same qualities here, both are invisible to our sight and neither of them can be controlled by people. Each being ruler and independent of its own actions.
The wind does as it pleases and people cannot control where it is going or where it has come from. Even though the wind is invisible, the effects of it can be seen. You can hear it, see the changes of its movement by watching the trees sway or the grass billow. In the same way you can see the effects of the Spirit by the fruit that it produces in the life of a born again. The bitter person becomes happy and joyful, anger turns into praise and hate turns into love. When we yield to the calling of the Holy Spirit, He will produce fruit in us that will be seen by all.
"God is spirit, and his worshipers must worship in the Spirit and in truth.”
God is Spirit and He is Holy, who can direct His path and He does as it pleases Him. His business is Self-governing and He has power over the most hardened of sinners. Like the wind, who can order Him about and direct His path?
We may be confused by how the Spirit works, but if we yield to His teachings His fruit will show in our personalities and our lives.
Galatians 5:22-23 NIV
But the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, gentleness and self-control. Against such things there is no law.