Passage
If ye be willing and hearken, ye shall eat the good of the land;
If ye be willing and hearken, ye shall eat the good of the land;
Isaiah 1:17 learn to do well: seek judgment, gladden the oppressed, do justice to the fatherless, plead for the widow.
Isaiah 1:18 Come now, let us reason together, saith Jehovah: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.
Isaiah 1:19 If ye be willing and hearken, ye shall eat the good of the land;
Isaiah 1:20 but if ye refuse and rebel, ye shall be devoured with the sword: for the mouth of Jehovah hath spoken.
Isaiah 1:21 How is the faithful city become a harlot! It was full of judgment; righteousness used to lodge in it, but now murderers.
The verse centers on "willing", "hearken", "shall", "good", and "land". It is saying that the verse draws attention to "willing" and "hearken", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 18's "Come now let us reason together saith..." into verse 20's "but if ye refuse and rebel ye...", so "willing" and "hearken" 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 "willing" and "hearken" with trust shaped by these words, not by a vague optimism outside the passage.