2 Kings 14:5

Now it came about, as soon as the kingdom was firmly in his hand, that he killed his servants who had slain the king his father.

Genesis 9:6

Whoever sheds man’s blood,
By man his blood shall be shed,
For in the image of God
He made man.

Exodus 21:12-14

He who strikes a man so that he dies shall surely be put to death.

Numbers 35:33

So you shall not pollute the land in which you are; for blood pollutes the land and no expiation can be made for the land for the blood that is shed on it, except by the blood of him who shed it.

2 Kings 12:20-21

His servants arose and made a conspiracy and struck down Joash at the house of Millo as he was going down to Silla.

2 Chronicles 25:3-4

Now it came about as soon as the kingdom was firmly in his grasp, that he killed his servants who had slain his father the king.

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
Whoever sheds man’s blood,
By man his blood shall be shed,
For in the image of God
He made man.
Exodus 21:12
He who strikes a man so that he dies shall surely be put to death.
Numbers 35:33
So you shall not pollute the land in which you are; for blood pollutes the land and no expiation can be made for the land for the blood that is shed on it, except by the blood of him who shed it.

His servants

2 Kings 12:20
His servants arose and made a conspiracy and struck down Joash at the house of Millo as he was going down to Silla.
2 Chronicles 25:3
Now it came about as soon as the kingdom was firmly in his grasp, that he killed his servants who had slain his father the king.

General references

Deuteronomy 24:16
Fathers shall not be put to death for their sons, nor shall sons be put to death for their fathers; everyone shall be put to death for his own sin.