Not slothful in business; fervent in spirit; serving the Lord;
All Commentaries on Romans 12:11 Go To Romans 12
Ambrosiaster
AD 400
This means that we should not be lukewarm in doing God’s work or the law, as God says in the Revelation of John: “Because you are lukewarm, I shall spit you out of my mouth.” Daily meditation removes laziness and makes people vigilant. Commentary on Paul’s Epistles.