8 For you were once darkness, but now you are light in the Lord. Walk as children of light 9 (for the fruit of the Spirit is in all goodness, righteousness, and truth), 10 finding out what is acceptable to the Lord. (Ephesians 5:8–10, NKJV)
Christians know that what pleases the Lord also brings joy and fulfillment in life. They “walk as children of light,” choosing the joy and confidence faithful living brings. You see, you do not have to sin in order to enjoy life. That is the devil’s lie. The path of sin may bring you momentary pleasure, but it always leads to spiritual darkness and eternal death. On the other hand, a life lived in goodness, righteousness and truth has God’s approval, and shows God’s light to the world. You get to choose whether to enjoy life in the joyful fulfillment of God’s approval, or to live in the darkness of sin and death. You must change your way of thinking in order to change from living in darkness to light. Faithful living results from transforming the way you think. Instead of thinking that sin is the way to happiness, think the way God thinks. Live in the light of truth, and show “what is that good and acceptable and perfect will of God” (Rom. 12:2). Nothing is more fulfilling and joyful than knowing God accepts you. That assurance is real to all who “walk as children of light.”