Passage
And thou shalt speak all these words unto them, but they will not hearken unto thee; and thou shalt call unto them, but they will not answer thee.
And thou shalt speak all these words unto them, but they will not hearken unto thee; and thou shalt call unto them, but they will not answer thee.
Jeremiah 7:25 Since the day that your fathers came forth out of the land of Egypt, unto this day, have I sent unto you all my servants the prophets, daily rising up early and sending them;
Jeremiah 7:26 but they have not hearkened unto me, nor inclined their ear; and they have hardened their neck: they have done worse than their fathers.
Jeremiah 7:27 And thou shalt speak all these words unto them, but they will not hearken unto thee; and thou shalt call unto them, but they will not answer thee.
Jeremiah 7:28 And thou shalt say unto them, This is the nation which hath not hearkened unto the voice of Jehovah their God, nor received correction; fidelity is perished, and is cut off from their mouth.
Jeremiah 7:29 Cut off thy hair, and cast it away, and take up a lamentation on the heights; for Jehovah hath rejected and forsaken the generation of his wrath.
The verse centers on "thou", "shalt", "speak", "words", "hearken", and "thee". It is saying that the verse draws attention to "thou" and "shalt", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 26's "but they have not hearkened unto me..." into verse 28's "And thou shalt say unto them This...", so "thou" and "shalt" belong inside that flow. In Jeremiah context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "thou" and "shalt" with trust shaped by these words, not by a vague optimism outside the passage.