2 Kings 14:5
As soon as he firmly established the kingdom he immediately put to death those servants who had taken the life of his father, the king.
Genesis 9:6
Whoever sheds the blood of man will have his blood shed by man. For man was made in the image of God.
Exodus 21:12-14
Death is the punishment for murder.
Numbers 35:33
If you did this, you would defile the land where you are living. Murder defiles the land, and except by the death of the murderer there is no way to perform the ritual of purification for the land where someone has been murdered.
2 Kings 12:20-21
His own officials plotted against him and killed him at the House of the Mound on the road that goes down to Silla.
2 Chronicles 25:3-4
Once he had firm control over the kingdom, he executed the officials who killed his father, the former king.