How do you determine when to leave a church, and when you do leave, how should you leave the church? This is an important topic that all Christians need to address. The church is the family of God, and, even though so many have lost the importance of the church and what it means to God, Christians who truly love God will also love His church. It's important to work through conflicts with brothers and sisters. Don't judge others by externals. Focus on the foundation.