When a person trusts Jesus Christ for salvation, he or she is made a member of the body of Christ.
Corinthians 12:27 - Now you are the body of Christ, and each one of you is a
part of it.
For a church body to function properly, all of its “body parts” need to be present.
A believer will never reach full spiritual maturity without the assistance and encouragement of other believers.
Going to church and being around other believers doesn’t make you a Christian but if you are a true believer in Jesus Christ, you will want to go to church and have a desire to be around other believers on a regular basis.
What is your part in "the body"? Are you active or atrophied?