What will happen to the Lord's house in the last days according to Les?
In the last days of the prophetic program, the Lord's house—His kingdom—will be established at the top of the mountains, exalted above the hills and all smaller kingdoms. It will be the eminent kingdom above every kingdom, and all Gentile nations will flow unto it.
Les explains from Isaiah 2:2 that God is speaking through the prophet, so the promise can be rested on. In the last days of the prophetic program, the mountain or kingdom of the Lord's house will be established in the top of the mountains. It will be the eminent kingdom above all kingdoms, exalted above the hills, which are the smaller kingdoms. The last line says all nations, Gentile nations, shall flow unto it. Earlier in the context, ten men out of all languages will take hold of the skirt of a Jew and say, “We will go with you, for we have heard that God is with you.” That was Israel's prospect: they could have been priests and a holy nation, bringing Gentile nations to a knowledge of their God.
And 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.