Passage
Woe to the rebellious children, saith Jehovah, that take counsel, but not of me; and that make a league, but not of my Spirit, that they may add sin to sin,
Woe to the rebellious children, saith Jehovah, that take counsel, but not of me; and that make a league, but not of my Spirit, that they may add sin to sin,
Isaiah 30:1 Woe to the rebellious children, saith Jehovah, that take counsel, but not of me; and that make a league, but not of my Spirit, that they may add sin to sin,
Isaiah 30:2 that set out to go down into Egypt, and have not asked at my mouth; to strengthen themselves in the strength of Pharaoh, and to take refuge in the shadow of Egypt!
Isaiah 30:3 Therefore shall the strength of Pharaoh be your shame, and the refuge in the shadow of Egypt your confusion.
The verse centers on "Spirit", "rebellious", "children", "saith", "jehovah", "take", "counsel", and "make". It is saying that the verse draws attention to "Spirit" and "rebellious", so its meaning should be read from those terms before moving to application.
The next verse adds "that set out to go down into...", so "Spirit" and "rebellious" should be read forward into that movement. 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 "Spirit" and "rebellious" with trust shaped by these words, not by a vague optimism outside the passage.