2 Kings 14:6

14:6 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 Yahweh 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.
-World English Bible

Other Translation

14:6 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.
-King James Version