2 Kings 14:5

And it came to pass that, as soon as the kingdom was confirmed in his hand, he smote his servants who smote the king his father;

Genesis 9:6

He that sheddeth man's blood, by man, shall his blood be shed, - For, in the image of God, made he man.

Exodus 21:12-14

He that smiteth a man, so that he die, shall surely be put to death.

Numbers 35:33

So shall ye not pollute the land wherein ye are, for blood, doth pollute the land, and for the land, no propitiatory-covering can be made, as touching blood, that is shed therein, save with the blood of him that shed it;

2 Kings 12:20-21

And his servants arose and made a conspiracy, and smote Joash, in the house of Millo which teeth down to Silla.

2 Chronicles 25:3-4

And it came to pass, when the kingdom was confirmed unto him, that he slew his servants who had smitten the king his father;

Treasury of Scripture Knowledge

Summary

And it came to pass, as soon as the kingdom was confirmed in his hand, that he slew his servants which had slain the king his father.

General references

Bible References

That he slew

Genesis 9:6
He that sheddeth man's blood, by man, shall his blood be shed, - For, in the image of God, made he man.
Exodus 21:12
He that smiteth a man, so that he die, shall surely be put to death.
Numbers 35:33
So shall ye not pollute the land wherein ye are, for blood, doth pollute the land, and for the land, no propitiatory-covering can be made, as touching blood, that is shed therein, save with the blood of him that shed it;

His servants

2 Kings 12:20
And his servants arose and made a conspiracy, and smote Joash, in the house of Millo which teeth down to Silla.
2 Chronicles 25:3
And it came to pass, when the kingdom was confirmed unto him, that he slew his servants who had smitten the king his father;

General references

Deuteronomy 24:16
Fathers shall not be put to death for sons, nor shall sons, be put to death for fathers, - every man, for his own sin, shall he put to death.