" Come see my zeal for the Lord" II Kings 10:16 KJB
Jehu made a big show for everyone to see when he slew all the followers of Baal. But when it came to his walk with God, where it matters, the Bible says that "he took no heed."
What kind of character do you have when you think no one is looking? Do you still serve God, read your Bible and pray? What kind of shows do you watch on TV when you think you won't get caught?
I would like to think that I would serve the Lord when I think no one is watching, as well as publicly because God is always watching me.