We Have Become the Offscouring of All Things. Or Have We?

Piper on professionalism and the pastorate:

We are afflicted in every way but not crushed, perplexed but not driven to despair, persecuted but not destroyed, always carrying in the body the death of Jesus (professionally?) so that the life of Jesus may also be manifested (professionally?) in our bodies (2 Cor. 4:9-11). 

I think God has exhibited us preachers as last of all in the world. We are fools for Christ's sake, but professionals are wise. We are weak, but professionals are strong. Professionals are held in honor, we are in disrepute. We do not try to secure a professional lifestyle, but we are ready to hunger and thirst and be ill-clad and homeless. When reviled, we bless; when persecuted, we endure; when slandered, we try to conciliate; we have become the refuse of the world, the offscouring of all things (1 Cor. 4:9-13). Or have we? 

Brothers, we are not professionals! We are outcasts. We are aliens and exiles in the world (1 Pet. 2:11). Our citizenship is in heaven, and we wait with eager expectation for the Lord (Phil. 3:20). You cannot professionalize the love for His appearing without killing it. And it is being killed.  

The aims of our ministry are eternal and spiritual. They are not shared by any of the professions. It is precisely by the failure to see this that we are dying. 

—John Piper, Brothers, We Are Not Professionals: A Plea to Pastors for a Radical Ministry (Nashville: B&H, 2013), 2.