I forget how many times have I come across Christians who don't see value to get involve in church. Some of them don't even want to attend Sunday service. When asked why, they said that there is no point to do that because God is in us and we are the temple of God, hence no need to gather in a building to perform ritual. I've experienced this tendency myself.
Someone once wrote that there are theologians who choose to read, contemplate, and write about ecclesiology on Sunday morning than participating in service. Ironic.
Regarding this matter, David Roach helpfully gives 10 reasons why get involved in church?
1. Gathering with a church encourages believers to love others and do good deeds (Hebrews 10:24-25).
2. A church is the main venue for using your spiritual gifts (1 Corinthians 12:1-31). God has given you abilities and talents intended to help other Christians. If you’re not involved in a church, others are being deprived of what you have to offer.
3. A church helps keep you from abandoning the faith. According to the author of Hebrews, the antidote to developing an “unbelieving heart” that leads you “to fall away from the living God” is to “exhort one another” (Hebrews 3:12-13)—an activity that occurs most prominently in the church.
4. A church helps you defend Christianity against those who attack it. When Jude told the early Christians to “contend for the faith” (Jude 3), he directed his instruction toward a group of believers, not a scattering of lone-ranger Christians. Answering challenges from coworkers, friends, and family members is always easier when you can ask fellow church members for help and wisdom.
5. A church is a great venue for pooling resources to support missions and benevolent works (2 Corinthians 8:1-7; 3 John 5-8). Your money combined with that of fellow church members can do a lot for Christ.
6. A church helps its members maintain correct doctrine (1 Timothy 3:15). You might begin to adopt unbiblical ideas without realizing it yourself. But you probably won’t adopt unbiblical ideas without someone at your church realizing it, and they can help you get back to the truth.
7. After your family, a church is the best group of people to meet your physical needs in an emergency (1 John 3:16-17; 1 Timothy 5:3-16).
8. A church supports you when you face persecution (Acts 4:23-31; 12:12-17). You may not be imprisoned for your Christian beliefs like the apostles were, but a church family is still a great source of comfort when you face stinging words or unfair treatment.
9. A church is where you can be baptized and take part in the Lord’s Supper (Matthew 28:18-20; 1 Corinthians 11:17-34; Ephesians 4:4-6). These two ordinances are a vital part of any believer’s walk with Jesus.
10. A church provides the setting for corporate worship (Ephesians 5:19; Colossians 3:16). Though it’s a blessing to praise God alone, there is a unique joy that accompanies singing God’s praises with an entire congregation of Christ followers.