In the precious chapter, it was recorded that Adam and Eve gave birth to Cain and Abel, but was corrupted by the ugly incident where cain killed Abel.

So in this chapter, the story would have been...

and Adam gave birth to Cain, and then Abel but Cain killed Abel...

But instead this chapter said

and Adam beget Seth

So this means

When we give our lives to God, our past doesn't exist, He wipes it clean like you never did anything wrong before.

God help us