Christians are called to be in communion with God and other believers. The Christian life is most fully lived in relationship with other believers, not as a solo Christian.
The Bible shows that people are, by nature, relational. Jesus calls His followers "friends" (John 15:15) and invites us into relationship with Him (Revelation 3:20). In fact, Jesus indicates that abiding in God leads to loving others (John 15:1–17). Scripture teaches that we are meant to be in relationship with one another. God saw that it was not good for Adam to be alone and made Eve as a companion (Genesis 2:18–25). In Christ, we become children of God (John 1:12). Jesus prayed for His followers to be one (John 17). The greatest commandments are to love God and love others (Matthew 22:34–40). Jesus said His followers would be known by their love for one another (John 13:34–35). The Bible teaches that Christians are members of a spiritual family, referred to as one body (1 Corinthians 12:12–31) and as brothers and sisters in Christ (1 John 3:1–3; Romans 8:15–17; Luke 8:21). The Christian life is most fully lived in relationship with other believers.
Life would be easy if not for other people—at least that’s what we think sometimes. Like the elderly uncle who comments on your weight gain at family functions, some people don’t motivate us to be near them. But God never intended us to be solo Christians. When we accept Christ as Lord, we join a family of believers (Luke 8:20–21). Rather than viewing fellowship with our Christian brothers and sisters as an obligation, we should consider it one of God’s most precious gifts. Besides, the Lord often uses our relationships to sanctify us, helping us learn forgiveness, humility, or exposing us to positive examples. Also, serving and loving well is only possible within relationships. Other Christians can help us develop knowledge and insight about God, keep us accountable, and encourage us. As Christians, we are members of a spiritual family. We are, in a sense, given to one another. In relationship with other believers, the Christian life is most fully lived.