Do not be slothful in zeal, be fervent in spirit, serve the Lord. —Romans 12:11 ESV John Piper, in a sermon “Boiling for Christ” Each of these two statements clarifies and protects the other from misunderstanding. “Do not be slothful in zeal”—do not be lazy in zeal—could be taken to mean: be pragmatic. Work, work, … More Piper: Do lots. Feel lots.