The Old Testament was mostly focusing on the nation of Israel. When we read verses in the Old Testament we can sometimes think that God is speaking to us as individuals when really God is speaking primarily to the Nation of Israel and then to the individual as secondarily. In this verse we can read it and think that it means nothing bad can happen to me because I am a Christian. Many have thought this way only to have the reality of life rock their world in a bad way. So when you are reading the OT and especially some of the wisdom literature, go into it with the mindset that God is first speaking to the nation of Israel as a whole. The question then comes to us now…how does this speak to me today?