In Esther 4:10-13 we read about how Mordecai (Esther's older cousin) tells Esther that Haman (a man who got promoted as highest honor in the king's palace) issued a decree to have all the Jews killed. He tells her to go and urge the king to stop it or they would all die.
Esther's response was that she would die if she entered the inner court where the king was, and that she needed the king to extend a special gold scepter to spare her life.
Mordecai wasn't all too pleased with her reply, and he tells her that just because she is in the king's house, she's not any different.
You see, Esther had been silent about being a Jew all this time (as Mordecai had advised her to), so nobody knew about her real identity except for her family.
Some of us are in that place.
Some of us are hiding the fact that we are Christians. For whatever reason it may be in your case, it's time to unravel. At some point or another, the truth always comes out.