According to Isaiah, what signifies the coming of the Lord's house?

The significance of the gathering of all nations as it relates to the coming of the Lord's house is rooted in Isaiah's vision of a future where God's glory is revealed to all people. In the book of Isaiah, particularly in chapter 2, there is a prophetic declaration that in the last days, the mountain of the Lord’s house will be established and lifted high, attracting nations to come and seek the Lord. This imagery speaks to a time of universal recognition of God's sovereignty, where diverse groups from all around the world converge to worship Him.

This gathering emphasizes not only the inclusive nature of God's plan for salvation but also the fulfillment of the promise that the knowledge of the Lord will cover the earth as the waters cover the sea (Isaiah 11:9). It underscores the idea that the coming of the Lord's house represents His ultimate reign and the unification of humanity in reverence toward Him.

In contrast, the other options do not capture this pivotal theme conveyed by Isaiah about the nature of God’s house and the era it represents. Therefore, the gathering of all nations stands out as the correct answer, highlighting the prophetic hope and vision Isaiah presents for a future where God's presence is central to all people.