Passage
And if ye refuse, and have rebelled, <FI>By<Fi> the sword ye are consumed, For the mouth of Jehovah hath spoken.
And if ye refuse, and have rebelled, <FI>By<Fi> the sword ye are consumed, For the mouth of Jehovah hath spoken.
Isaiah 1:18 Come, I pray you, and we reason, saith Jehovah, If your sins are as scarlet, as snow they shall be white, If they are red as crimson, as wool they shall be!
Isaiah 1:19 If ye are willing, and have hearkened, The good of the land ye consume,
Isaiah 1:20 And if ye refuse, and have rebelled, <FI>By<Fi> the sword ye are consumed, For the mouth of Jehovah hath spoken.
Isaiah 1:21 How hath a faithful city become a harlot? I have filled it <FI>with<Fi> judgment, Righteousness lodgeth in it--now murderers.
Isaiah 1:22 Thy silver hath become dross, Thy drink polluted with water.
The verse centers on "refuse", "rebelled", "sword", "consumed", "mouth", "jehovah", "hath", and "spoken". It is saying that the verse draws attention to "refuse" and "rebelled", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 19's "If ye are willing and have hearkened..." into verse 21's "How hath a faithful city become a...", so "refuse" and "rebelled" 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 "refuse" and "rebelled" with trust shaped by these words, not by a vague optimism outside the passage.