Proverbs 21:2 (Kings James Version)
"Every way of a man is right in his own eyes: but the LORD pondereth the hearts."
Everyone thinks of themselves as 'good' or think that they're doing the right thing and some people even dress and speak and carry themselves a certain way to make it seem that they're something they're not. We may be able to fool and convince ourselves and people around us, but we can't fool The Almighty God. He knows our heart and what matters to him is our heart!