Certainly wise people know that time is a precious commodity. All of us have the same amount of time at our disposal, with sixty minutes in every hour and twentyfour hours in every day. None of us can stretch time. But wise people use it to the fullest possible advantage. They know that time is passing, and also that the days are evil. So they seize each fleeting opportunity while it is there. For once it has passed, even the wisest people cannot recover it. Somebody once advertised as follows: ‘LOST, yesterday, somewhere between sunrise and sunset, two golden hours, each set withsixty diamond minutes. No reward offered, for they are gone for ever’[Horace Mann]. By contrast, Jonathan Edwards, the philosopher-theologian who became God’s instrument in the ‘Great Awakening’ in America in 1734–5, wrote in the seventieth of his famous Resolutions just before his twentieth birthday: ‘Resolved: Never to lose one moment of time, but to improve it in the most profitable way I possibly can.’ He was a wiseman, for the first sign of wisdom which Paul gives here is a disciplined use of time.
–John Stott, The Message of Ephesians (Bible Speaks Today) [Downer’s Grove, Ill. IVP Academic, 1984), p.117, to be quoted in my adult ed class