Passage
Let all the nations be gathered together, and let the people be assembled: who among them can declare this and shewe vs former things? let them bring foorth their witnesses, that they may be iustified: but let them heare, and say, It is truth.
Nearby Context
Isaiah 43:7 Euery one shall be called by my Name: for I created him for my glorie, formed him and made him.
Isaiah 43:8 I will bring foorth the blinde people, and they shall haue eyes, and the deafe, and they shall haue eares.
Isaiah 43:9 Let all the nations be gathered together, and let the people be assembled: who among them can declare this and shewe vs former things? let them bring foorth their witnesses, that they may be iustified: but let them heare, and say, It is truth.
Isaiah 43:10 You are my witnesses, saith the Lord, and my seruant, whom I haue chosen: therefore yee shall knowe and beleeue me and yee shall vnderstand that I am: before me there was no God formed, neither shall there be after me.
Isaiah 43:11 I, euen I am the Lord, and beside me there is no Sauiour.
Study Lenses
The verse centers on "nations", "gathered", "together", "people", "assembled", "declare", "shewe", and "former". It is saying that the verse draws attention to "nations" and "gathered", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 8's "I will bring foorth the blinde people..." into verse 10's "You are my witnesses saith the Lord...", so "nations" and "gathered" belong inside that flow. In Isaiah context, the local focus is the Holy One of Israel, judgment and restoration, the servant of the LORD, and Zion's hope.
A plain takeaway is to answer the verse's own emphasis on "nations" and "gathered" with trust shaped by these words, not by a vague optimism outside the passage.