When Nicodemus the Pharisee came to Jesus, he was spiritually dead. Jesus said to him, “Ye must be born again.” To be born-again is to have a spiritual life, having fellowship and communion with the living and true God. In John 3:8, Jesus uses the illustration of the “wind” to describe one having spiritual life. He says “The wind bloweth where it listeth, and thou hearest the sound thereof, but canst not tell whence it cometh, and whither it goeth: so is every one that is born of the Spirit.” (John 3:8) The wind is invisible, you cannot see the wind with your eyes but you can feel its breeze. When you fly a kite, you see the reality of the wind blowing when the kite is lifted up in the sky. The presence of the Holy Spirit in the believer’s life is such, not visible to the naked eye yet the true believer is able to overcome sin and temptation by the power of the indwelling Spirit.