When my daughter was in ninth grade, I required that she write a ‘term paper’. She wanted to write it on the gods and goddesses of ancient Greece and compare them to what the Bible says. This was the result.
Those who say, “God knows our hearts,” should be well aware that He does know our hearts and He knows when our hearts are behaving in ignorance or rebellion. We have no excuse. “God knows our hearts,” should bring ‘fear to our hearts’ because as the prophet Jeremiah says, “The heart is more deceitful than anything else and mortally sick. Who can fathom it?” (Jeremiah 17:9).