It's the one biblical truth that no one believes. In fact, I would go as far as saying that it's a street-level theological heresy that we're comfortable to live with as Christians.
"It's not my fault."
If you ask the little girl why she hit her brother, she won't tell you it was because of the sin that's in her heart. No, she'll say, "He was bothering me."
If you ask the teenager why he came in to work so late, he won't willingly take responsibility. No, he'll tell you a long story of...