No young Christian and no old Christian can have real success in the Christian life without the fellowship of other believers. The church is a divine institution, built by Jesus Christ Himself.
CHURCH MEMBERSHIP: Is It a Must, or Can We Go It Alone?
THE EXHORTATION ON CHURCH LIFE: Ephesians 4:1-6
"You should live like the person you have become. Live in unity and mutual ministry with others and in holiness before God. Because Jews and Gentiles have been united by God in Christ, we should manifest the spiritual unity by being united in our actions." - Max Anders