Passage
And they have built the high places of Topheth, which is in the valley of the son of Hinnom, to burn their sons and their daughters in the fire; which I commanded not, neither did it come up into my mind.
And they have built the high places of Topheth, which is in the valley of the son of Hinnom, to burn their sons and their daughters in the fire; which I commanded not, neither did it come up into my mind.
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.
Jeremiah 7:30 For the children of Judah have done evil in my sight, saith Jehovah; they have set their abominations in the house which is called by my name, to defile it.
Jeremiah 7:31 And they have built the high places of Topheth, which is in the valley of the son of Hinnom, to burn their sons and their daughters in the fire; which I commanded not, neither did it come up into my mind.
Jeremiah 7:32 Therefore, behold, days are coming, saith Jehovah, when it shall no more be said, Topheth, and Valley of the son of Hinnom, but the valley of slaughter; for they shall bury in Topheth, till there be no place.
Jeremiah 7:33 And the carcases of this people shall be food for the fowl of the heavens, and for the beasts of the earth; and none shall scare [them] away.
The verse centers on "built", "high", "places", "topheth", "valley", "hinnom", "burn", and "sons". It is saying that the verse draws attention to "built" and "high", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 30's "For the children of Judah have done..." into verse 32's "Therefore behold days are coming saith Jehovah...", so "built" and "high" 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 "built" and "high" with trust shaped by these words, not by a vague optimism outside the passage.