In this sermon, we explored the Apostle John's advice on how our actions reveal the true state of our hearts. Although all believers struggle with sin, John warns that those who persist in sin are not abiding in Christ; instead, they are children of Satan. By studying 1 John 3:4-8, we learned that the sin John refers to is unrepentant, ongoing sin that stands in complete opposition to God, which he describes as "lawlessness." We also learned that persistent, unrepentant sin aligns a person with the works of Satan, which is contrary to following Jesus, who came to destroy Satan's works. As children of God, our actions should reflect our identity if we are truly abiding in Christ. Even when we sin habitually, our response should include recognizing our wrongdoing, repenting, and relying on God's grace.