In John 3, 6 Jesus says to Nicodemus, “Flesh gives birth to flesh, but the Spirit gives birth to spirit.”
But what is this flesh that Jesus is talking about? It is what the NIV calls “the sinful nature.” Paul writes to the church saying, “The acts of the sinful nature are obvious: sexual immorality, impurity and debauchery; 20 idolatry and witchcraft; hatred, discord, jealousy, fits of rage, selfish ambition, dissensions, factions 21 and envy; drunkenness, orgies, and the like. I warn you, as I did before, that those who live like this will not inherit the kingdom of God.” (Gal. 5:19-20, NIV).
Jesus is telling Nicodemus that something has to change in the very nature of a person for them to have the hope of heaven. And that change in the essence of a person takes place by none other than the power of God’s Holy Spirit.
Living Big In Jesus,
Keith
AgapePoint's Blog 
Brenda Werner
December 23, 2010
CHANGED…..by the Grace of God and a desire to see Heaven!!
Shannon Finley
December 23, 2010
Keith, these teachings should inspire thought and reflection for not only those who have not obeyed the gospel of our Lord Jesus Christ, but also for “seasoned” Christians as well. Keep reminding us of who we are and how we are supposed to act, brother! Thank you!