The fruit of light listed in today’s passage — goodness, righteousness, and truth — are examples of what Paul elsewhere refers to as the fruit of the Spirit (Gal. 5:22–24). These things, along with qualities including love, joy, patience, and self-control, are the marks of the true Christian. Believers do not practice such things perfectly, but they should be able to find some evidence, however small, of these graces in their lives.
If you fear your attempts to share the Gospel are without power, remember that God will indeed send His Spirit to empower His Word, no matter how feeble the preacher. As you study Scripture, ask Him to illumine their meaning, and when you doubt, devour His teachings all the more intently. If you faithfully attend Lord’s Day services, be encouraged that the Spirit uses the sermon, the sacraments, songs, and prayer to strengthen your faith.