What does 1 John 3:10 mean?
John summarizes his teachings in verses 1 through 9 with two characteristics. First, a person who does not "practice righteousness" is not from God. In other words, a believer will seek to live according to God's ways. They may fail, sometimes miserably (Psalm 51:1–4), but they will not persist in deliberately "walking" in darkness.This is the general position of the Bible, and John's letter supports that notion. At the same time, his specific audience is the Christian believer. It is possible for Christians to sin, and all sin involves rejecting God in favor of Satan. This does not mean salvation can be lost. It does mean that certain attitudes or actions can never be excused for the saved believer. A person who does not love other believers fails to show the primary sign of the faith: love (John 13:35). Believers are brothers and sisters in Christ and are children of God. A believer's top goals are to fully love God and to love one's neighbor as oneself (Matthew 22:37–40). Those who show no desire to love others, especially their fellow believers, cannot truly claim to be a child of God.