"Preserve the roots"

1. Jacob 5: 11, 54
   11 And the Lord of the vineyard caused that it should be digged about, and pruned, and nourished, saying unto his servant: It grieveth me that I should lose this tree; wherefore, that perhaps I might preserve the roots thereof that they perish not, that I might preserve them unto myself, I have done this thing.
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   54 And, behold, the roots of the natural branches of the tree which I planted whithersoever I would are yet alive; wherefore, that I may preserve them also for mine own purpose, I will take of the branches of this tree, and I will graft them in unto them. Yea, I will graft in unto them the branches of their mother tree, that I may preserve the roots also unto mine own self, that when they shall be sufficiently strong perhaps they may bring forth good fruit unto me, and I may yet have glory in the fruit of my vineyard.