In the last days
the mountain of the Lord's temple will be established
as the highest of the mountains …
They will beat their swords into plowshares
and their spears into pruning hooks.
Nation shall not take up sword against nation,
neither shall they learn war anymore.
Isaiah 2:1-4
The text from Isaiah is set during a time of war. In the prior chapter, the "holy" city of Jerusalem is accused of murder, injustice and corruption. Isaiah's vision is not in the present; it takes place in the days to come. This is a text of hope, which we're all looking for. We're longing for that time when we shall learn war no more.