G. Campbell Morgan emphasizes the importance of 'redeeming the time' as a call for Christians to actively seize opportunities for good in a world filled with evil. He explains that the apostle Paul encourages believers to walk wisely and understand God's will, highlighting the need for carefulness in daily life and the influence of being filled with the Spirit. Morgan illustrates that the challenges of the present age should be viewed as opportunities to manifest godliness and to engage in the 'commerce of God.' He urges Christians to recognize their heavenly calling and to invest their time and actions in ways that reflect their faith, ultimately preparing for a higher service in eternity.