When God created man, He said that man was not meant to be alone. Man is meant to be in community with others. Ecclesiastes 4:9 tells us that two are better than one. We were created to help each other. We can accomplish far more for the Lord and for each other when we work together as part of a community of believers. The early church knew the importance and the value of community. In the book of Acts, we see that they worshiped together, broke bread together, and supported each other physically and spiritually.
In several of his letters to the church in various parts of the world, Paul spells out the characteristics that should define a community of believers. Romans 12:10 says that we should be devoted to each other. We are to love one another (Romans 13:8) and accept one another just as Christ accepted us (Romans 15:7). In humility that comes from love, we are to serve each other (Galatians 5:13).
When anyone in our community of believers is burdened, we are to help carry that burden (Galatians 6:2). With gentleness and patience, we should bear each other in love (Ephesians 4:2). Out of our reverence for Christ, we are to submit to each other (Ephesians 5:21). We are to instruct one another (Romans 15:14), encourage each other and build each other up (1 Thessalonians 5:11).
When we are part of a community of believers, we have the benefit of being there to help each other in our struggles. When one falls, there is another there to lift him up. But a person who is not part of a community has no one to help with his struggles. When he falls, there is no one there to help him up. Two are truly better than one (Ecclesiastes 4:9-10).