The Bible says in 1 John 1:9 If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
How does a worm get inside an apple? Perhaps you think the worm burrows in from the outside. No, scientists have discovered that the worm comes from inside. But how does he get in there? Simple! An insect lays an egg in the apple blossom. Sometime 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.