There have been moments in my own work when I have been preparing to speak to a group. At such times I have found that as I get quiet I also become troubled. The inner voice of God’s Spirit speaks to my conscience and reminds me of pride, or laziness, or impurity, or failure to pray or prepare. At moments like this, all I can say is, “My God, I come before you with mixed motives and an impure heart. I am a sinful man. Forgive me for Christ’s sake. Fill me with your Spirit, and use me just as I am”. Then I stand and speak and minister, confident that only God knows my heart well enough to sort out the pure from the impure. I give him all I know of myself and ask his forgiveness where necessary. If I were to wait until I was one hundred percent sure that my motives were pure I would never speak or serve or minister! I would be completely paralyzed. Only one person was totally devoted to another’s cause, and that was Jesus Christ, my leader. Since he has graciously called me, forgiven me and included me in his family, I seek, however imperfectly, to serve his cause.
From Transforming Leadership (1991, IVP).