'Mountain of the Lord' in the Bible

In the last daysthe mountain of the Lord’s house will be establishedat the top of the mountainsand will be raised above the hills.All nations will stream to it,

and many peoples will come and say,“Come, let us go up to the mountain of the Lord,to the house of the God of Jacob.He will teach us about His waysso that we may walk in His paths.”For instruction will go out of Zionand the word of the Lord from Jerusalem.

Your singing will be like thaton the night of a holy festival,and your heart will rejoicelike one who walks to the music of a flute,going up to the mountain of the Lord,to the Rock of Israel.