Have you ever bitten into an apple and found a worm in it, and yet the outside of the apple showed no hole or entry point for the worm? How did the worm get inside the apple? Clearly he could not have burrowed in from the outside. And he didn't; he came from inside. So what happens? An insect lays an egg in the apple blossom. Some time later, the worm hatches in the heart of the apple, then eats his way out. Sin, like the worm, begins in the heart and works out through a person’s thoughts, words, and actions.