Question:
Is there such a thing as evil?  Are people naturally evil or is it because they do not know what they do?

Answer:

It is in our fallen nature to do wrong. We are born in sin and shaped in iniquity (read Psalm 51:5).  The Bible tells us that there is none that does good (see Psalm 14:3; 53:3), and that our hearts are only evil continually (see Genesis 6:5).  That’s why we need the Lord Jesus as our Savior.  We cannot save ourselves.