In minecraft how does herobrine know every single bit of info about me?

So me and my friend were playing and herobrine appeared so we thought whatever but then he started saying RIP: (my name) and also my address. He also knew everything like my brothers name and also he knew everything about my parents. Has this ever happened to you and is this normal cause i'm tempted to call the nsa, fbi, cia whatever i should call i have pics and please help me out and tell me IS THIS NORMAL

This was most likely just a friend (or your brother) playing a prank on you. Herobrine isn't supposed to exist in minecraft anymore, this was just someone trying to scare you. Don't worry about it.

Your friend probably invited another friend and named him Herobrine

NO WAIT! Do not call the NSA. Call the Herobrine Control Agency. It is the sister company to Counter-Slender Enforcement Division, and the Bigfoot Investigation Agency. They will send agents over in a red 1995 Chevy Pick-up and will be wearing a gray and black striped shirts, and will come to your door and knock 3 times. If they knock one or two times DO NOT ANSWER! They are fake. They will then whisper "Alan's hot juice box". You return by saying " I like cheese". After that they will ask "Cheddar or Smoked". As soon as you answers smoked open the door. They will then go and hack into the Minecraft Matrix. As soon as they are in, their digital avatars will attack him… Wait… He is watching me… HURRY, CALL THEM! It is too late for me… GOODBYE