D&C 133

Isaiah wrote that -

"...it shall come to pass in the last days, that the mountain of the LORD's house shall be established in the top of the mountains, and shall be exalted above the hills; and all nations shall flow unto it.
3 And many people shall go and say, Come ye, and let us go up to the mountain of the LORD, to the house of the God of Jacob; and he will teach us of his ways, and we will walk in his paths: for out of Zion shall go forth the law, and the word of the LORD from Jerusalem." (Old Testament Isaiah 2:2 - 3)

I believe the "mountain of the Lord's house" is the place or area where the Lord's temple is. I sense with Isaiah's words that there will be more than one place and more than one temple. of the first mountain of the Lord's house he is more specific about. He suggests that this place will be in the top of the mountains. Then he suggests two other places, one in Zion and one in Jerusalem. Zion itself could in itself suggest many places and temples. Micah said almost the same thing. We see the beginning of this expression as -

"...Solomon began to build the house of the LORD at Jerusalem in mount Moriah." (Old Testament 2 Chronicles 3:1)

In modern revelation, the Lord says -

"Let them, therefore, who are among the Gentiles flee unto Zion.
13 And let them who be of Judah flee unto Jerusalem, unto the mountains of the Lord's house." (Doctrine and Covenants Section 133:12 - 13)

It is in the place of the temples as well as in the temples that we receive the law and the word of the Lord. We receive a little bit more incites as Presid

President Gordon B. Hinckley said a the dedication of the Conference Center in Salt Lake -

"I believe [Isaiah 2:2–3] applies to the historic and wonderful Salt Lake Temple. But I believe also that it is related to this magnificent hall. For it is from this pulpit that the law of God shall go forth, together with the word and testimony of the Lord.” (In Conference Report, Oct. 2000, 89; or Ensign, Nov. 2000, 69.)