So it was the sound that filled the house, not the wind. It was an invisible cause producing audible effects. Spiritual references to the power of wind are numerous and are always understood to be under God's control. More significant than wind as power is wind as life. In John 3:8 it says, "The wind blows where it wishes, and you hear the sound of it but cannot tell where it comes from or where it goes. So is everyone who is born of the Spirit." So just as the first Adam received the breath of physical life, so the second Adam, Jesus Christ, brings the breath of spiritual life. And the idea of spiritual life as generated by the Holy Spirit is understood in the wind at Pentecost. In verse 2, the wind at Pentecost was rushing and mighty, a powerful windy sound that nevertheless did not extinguish the tongues of fire.