The first branch to be grafted in to the mother tree is the last branch that was planted in the vineyard. The last branch is the Nephite/Lamanite branch. Therefore, they will be the first of scattered Israel to return to the Lord in the last days. The work has progressed at such a great rate among these peoples that we are witnessing the fulfillment of this prophecy today. This is just one of the aspects in which the phrase, "the last shall be first and the first shall be last," applies.