Jeremiah 7:31 in the King James Version
And they have built the high places of Tophet, which is in the valley of the son of Hinnom, to burn their sons and their daughters in the fire; which I commanded them not, neither came it into my heart.
Context
30 “For the children of Judah have done that which is evil in my sight,” says the LORD. “They have set their abominations in the house which is called by my name, to defile it.
31 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 didn’t command, nor did it come into my mind.
32 Therefore behold, the days come”, says the LORD, “that it will no more be called ‘Topheth’ or ‘The valley of the son of Hinnom’, but ‘The valley of Slaughter’; for they will bury in Topheth until there is no place to bury.