Isaiah was speaking to people who were aware of the devastation that the powerful Assyria had deployed. Israel had been overtaken. Judah was under threat. Yet, the prophet speaks a message of hope (Read chapters 9 and 10).
Isaiah promised them a new king.
This king would be supported by the Lord:The spirit of the Lord shall rest on him,the spirit of wisdom and understanding,the spirit of counsel and might,the spirit of knowledge and the fear of the Lord.
The promised king would be an ideal king. A king who would be what kings should be. With his wisdom, understanding, counsel, knowledge, and fear of the Lord, this king would be a good judge.