An Astronaut with a higher mandate

'As I was returning to earth, I realized that I was a servant - not a celebrity. So I am here as God's servant on planet Earth to share what I have experienced that others might know the glory of God'
                                                                                                            - Colonel James Irwin, Astronaut

I guess this is a direct challenge to all believers to wake up to the task of evangelism. Tell what you have experienced at the Cross. That is the only life-giving information that promotes the glory of God.