In the Lord's Vineyard what does the grafting teach (Jacob 5)? Jacob 5 in the Book of Mormon is a beautiful parable of Jesus Christ working in his Vineyard to save the children of God. It is prophetic in teaching how he works.

Here are some symbols involved:


Vineyard: The world
Lord: Jesus Christ
Tame olive tree: House of Israel
Wild olive tree: Gentiles
Branches: Groups of people
Servant(s): Prophets and those that serve the Lord
Fruit: Lives of people
More info here ...


Jacob 5:55-56 teaches about some of the grafting the Lord does to save his vineyard after the fruits have become bad. We see later how effective this is. The grafting is part of how he saves the fruit.


  Jacob 5:55-56
  
  55 And it came to pass that they took from the natural
  tree which had become wild, and grafted in unto the natural trees,
  which also had become wild.
  
  56 And they also took of the natural trees which had become wild, and
  grafted into their mother tree.


What is happening here with the people symbolized and what does it teach?
It signifies the gathering of Israel. In grafting in both directions, the trees effectively become the same.

In more detail, one could interpret:

Grafting from the mother tree to the natural trees: Spreading the gospel to the dispersed tribes of Israel.

Grafting from the natural trees to the mother tree: Restoring the tribes, strengthening the House fo Israel.