I believe as the Bible says "you reap what you sow", so yes, I believe it.
We may not always see it or know it but it happens.
Having said that, I want to say that I DO NOT believe every bad thing that happens to someone is a result of something they did.
Innocent people do get sick,hurt,abused etc.. But I do believe if someone does something cruel to someone else, they will have to pay for it.
note: sorry mga mods, please lang ko move , kay sayop