Helsinki Vineyard

Why Jesus used unclear parable when he talked to people? Why did He explain the meaning only to disciples? Jesus told a parable about a sower to explain why people reacted differently to His message of the Kingdom of God.  Why didn't all people receice His message? Why some people abandoned their faith? Why some belivers were not able to produce fruit in their faith? Why some believers are so fruitful that they are able to feed multitudes? This teaching is in Finnish.