What does Isaiah 2:1 mean?

Isaiah once again introduces himself and the contents of his book. He had done so at the beginning of the first chapter (Isaiah 1:1). This introduction is simpler: Isaiah says this is what he saw concerning Judah and Jerusalem. This is also the last kind of introduction to appear in the book.

Scholars suggest perhaps chapter one is meant to serve as an introduction and summation for the rest of Isaiah's prophecy. Chapter two would formally begin that message. Others speculate that Isaiah means to clarify that he actually saw, in a vision, the events he describes in Isaiah 2:2–5. Although the same future event is described, with the same words exactly in Micah 4:1–4, Isaiah is clear that he witnessed himself what will happen in Jerusalem during this future time.