Isaiah 11

The prophet Moroni, quoted these words of Isaiah to the Prophet Joseph Smith telling him they would shortly be fulfilled saying -

"...there shall come forth a rod out of the stem of Jesse, and a Branch shall grow out of his roots:

2 And the spirit of the LORD shall rest upon him, the spirit of wisdom and understanding, the spirit of counsel and might, the spirit of knowledge and of the fear of the LORD;
3 And shall make him of quick understanding in the fear of the LORD: and he shall not judge after the sight of his eyes, neither reprove after the hearing of his ears..."  (Old Testament | Isaiah 11:1 - 3)

I understand this stem to be the Prophet Joseph Smith.  And of this work and with the restoration of all the keys of all dispensations that -

"...there shall be a root of Jesse, which shall stand for an ensign of the people; to it shall the Gentiles seek: and his rest shall be glorious.
11 And it shall come to pass in that day, that the Lord shall set his hand again the second time to recover the remnant of his people, which shall be left, from Assyria, and from Egypt, and from Pathros, and from Cush, and from Elam, and from Shinar, and from Hamath, and from the islands of the sea.
12 And he shall set up an ensign for the nations, and shall assemble the outcasts of Israel, and gather together the dispersed of Judah from the four corners of the earth.
13 The envy also of Ephraim shall depart, and the adversaries of Judah shall be cut off: Ephraim shall not envy Judah, and Judah shall not vex Ephraim."  (Old Testament | Isaiah 11:10 - 13)

It is under these restored keys that all Israel shall be gathered to the Savior.