The Apostle Paul
Romans 12:11WEB·traditional attribution

not lagging in diligence; fervent in spirit; serving the Lord;

John Calvin Reformed

11. Not slothful in business, etc. This precept is given to us, not only because a Christian life ought to be an active life; but because it often becomes us to overlook our own benefit, and to spend our labors in behalf of our brethren.

Jamieson-Fausset-Brown Reformed

not slothful in business--The word rendered "business" means "zeal," "diligence," "purpose"; denoting the energy of action. serving the Lord--that is, the Lord Jesus (see Eph 6:5-8). Another reading--"serving the time," or "the occasion"--which differs in form but very slightly from the received reading, has been adopted by good critics [LUTHER, OLSHAUSEN, FRITZSCHE, MEYER]. But as manuscript authority is decidedly against it, so is internal evidence; and comparatively few favor it.

Albert Barnes Presbyterian

Verse 11. Not slothful. The word rendered slothful refers to those who are slow, idle, destitute of promptness of mind and activity. Comp. . In business, (τησπουδη). This is the same word which, in 8, is rendered diligence. It properly denotes haste intensity, ardour of mind; and hence it also denotes industry, labour. The direction means, that we should be diligently occupied in our proper employment.