2 Kings 14:6 in the King James Version
But the children of the murderers he slew not: according unto that which is written in the book of the law of Moses, wherein the LORD commanded, saying, The fathers shall not be put to death for the children, nor the children be put to death for the fathers; but every man shall be put to death for his own sin.
Context
5 As soon as the kingdom was established in his hand, he killed his servants who had slain the king his father,
6 but the children of the murderers he didn’t put to death, according to that which is written in the book of the law of Moses, as the LORD commanded, saying, “The fathers shall not be put to death for the children, nor the children be put to death for the fathers; but every man shall die for his own sin.”
7 He killed ten thousand Edomites in the Valley of Salt, and took Sela by war, and called its name Joktheel, to this day.