A temporal mind-set thinks primarily about the things of now. It focuses on this world as if it is all there is. The time is now because there is no other time. It embraces an "eat, drink and be merry for tomorrow we die" philosophy of life.
The Christ follower, however, knows that this life is only temporary; the world to come is permanent. So, we have only this much time and we better make good use of it-good use not in the sense of getting maximum pleasure as we play hard, but as we make it count for all eternity.
It is foolish to waste time. Paul, the apostle, both warns and encourages us: the time we have is limited and the days are evil, so we need to make the best use of our time to impact this world for Jesus while we have opportunity.
Opportunity is originally a Latin word that means "toward the port." When the winds and tides were favorable, the sailing ship would take advantage of the "opportunity." The days are evil, Paul says, which sounds like unfavorable winds, not favorable. Still, this is our time, our opportunity. Life is short. Pray hard.