2 Kings 14:6 - The one who sins shall die

2 Kings 14:6 (NKJV)
But the children of the murderers he did not execute, according to what is written in the Book of the Law of Moses, in which the Lord commanded, saying, “Fathers shall not be put to death for their children, nor shall children be put to death for their fathers; but a person shall be put to death for his own sin.”