Shincheonji is secretive.
One of the big things is that Shincheonji never mentions their group name when they first outreach to you.
A Bible study is a time dedicated to studying the Bible. It is not a time created to gather people and promote a specific ministry, fellowship, or a church. At Shincheonji bible studies, they focus on providing a place where believers of different backgrounds and denominations can come together in unity and harmony for the shared purpose of learning more about God and His word. They don’t really emphasize on promoting themselves, but if you ask they will most likely tell you who they are.