What makes someone a disciple of Christ?
How is such a person different from a believer of Christ?
I am quite certain that the disciples are not restricted to the twelve apostles.
There are even secret disciples, as mentioned in the Bible.
This means that there are people who believe in Christ, and want to follow Him, but are restricted in how they can show their beliefs in public.
They are still disciples of Christ, because they are determined to live their lives according to how Christ wants them to live.
On the other hand, there are believers who attend Church regularly, but have not made up their minds to be disciples.
The Church then becomes a place for them to socialise.
How would you like to live out your faith?
I believe the best way is not to judge other believers, because we do not know their situation, but just to do our best to be the disciples Christ wants us to be.