1 Samuel 16:7
[God says,] "...The LORD does not look at the things man looks at. Man looks at the outward appearance, but the LORD looks at the heart."
A lot of time is spent on our outer appearance and very little time is spent on asking God to give us a clean heart. Know that, no matter what it looks like on the outside, if the heart isn't genuine, its counterfeit characteristic will penetrate through your exterior and expose what's really going on. Remember, you can fool some people some of the time, but you cannot fool God ANYTIME!