2 Chronicles 23:7
The descendants of Levi will surround the king, brandishing weapons in their hands, and anybody who enters the Temple will be killed. Stay near the king wherever he enters and leaves."
Exodus 19:12-13
You are to set boundaries for the people all around: "Be very careful that you don't go up on the mountain or touch the side of it. Anyone who touches the mountain is certainly to be put to death.
Exodus 21:14
If a man acts deliberately against his neighbor, to kill him by treachery, you are to take him to die even if he's at my altar.
Numbers 3:10
Appoint Aaron and his sons so that they are to take responsibility for their priesthood. Any unauthorized person who approaches it is to be put to death."
Numbers 3:38
In front of the tent and east of the Tent of Meeting, Moses, Aaron, and Aaron's sons encamped facing the east. They were tasked to perform the duties of the sanctuary and care for the needs of the Israelis. Any unauthorized person who approached was to be executed.
2 Kings 11:8-9
guarding the king and surrounding him with weapons in hand. Whoever comes within range is to be killed. Stay with the king wherever he goes, coming or going."