BitMaxz, you'll need to tell your relatives that the passphrase is like a "key to the chest" (chest = Bitcoin wallet). Once they have assembled the "key", they can open the "chest" and access the Bitcoins.
If you want the passphrase to be accessible strictly upon your death, you can put one of the pieces in your last will.
But how ?, do you think he can understand the puzzle of my wallet. How about if my brother or my mother has not literary computer illitirate? They can reciece my bitcoin?