From MacLaren’s sermon on Ephesians 5:15-16 “Pay careful attention, then, to how you walk, not as unwise but as wise, redeeming the time, because the days are evil.”

Make sure you read the last paragraph.

“To-day is given us mainly that we may learn to know God better, and to love Him more, and to serve Him more joyfully. Our daily duties are given us for the same purpose. But if we go about them without thinking of God or the highest ends which life is meant to serve, then we shall certainly lose the highest ends, and an opportunity will go past us unimproved. But if, on the other hand, whilst we follow our daily business for the sake of legitimate temporal gain, we see, above that, the aspect of daily life as educating in all Christian nobleness and lofty thoughts and purposes, then we shall have given away the lower ends for the sake of attaining the higher.

“You live, suppose, to found a business, to become masters of your trade, to gain wisdom and knowledge, to establish for yourselves a position amongst your fellow-men, to cultivate your character so as to grow in wisdom and purity, apart from God. Or you live in order to win affection and move thankfully in the heaven of loving associations in your home, amongst your children. Or you live for the sake of carrying some lower but real good amongst men. Many of these ends are beautiful and noble, and necessary for the cultivation and discharge of the various duties and relationships of life; but unless they are all kept secondary, and there towers above them this other, life is wasted.

“If life is not to be wasted, they must be bartered for the higher, and we must recognise that to give all things for the sake of Christ and His love is wise merchandise and good exchange. ‘What things were gain to me, those I counted loss for Christ. Yea! doubtless, and I count all things but loss that I may win Him and be found of Him.’ You must barter the lower if you are to secure the higher ends for which life is the appointed season….

“One day it will be asked of you and of me, ‘What did you do with the life which I gave you, that you might know Me?’ And if we have only the answer, ‘O Lord! I founded a big business in Manchester—I made a for-tune—I wrote a clever book, that was most favourably reviewed—I brought up a family’—the only thing fit to be said to us is, ‘Thou fool!’ The only wisdom is the wisdom that secures the end for which life was given.“

^{Alexander MacLaren, Expositions of Holy Scripture: Ephesians (Bellingham, WA: Logos Bible Software, 2009), 332–333 & 335.}