What is the meaning of "sword and gun on the table"

The sword and the gun are part of the ritual of joining the Mafia although it appears that some clans use a knife:

https://en.wikipedia.org/wiki/Initiation_ritual_(mafia)

In Sicily:

an aspiring member must take part in an initiation ritual [...]. he describes the initiation ritual he underwent in the spring of 1893:

I was invited to take part in a secret meeting of the Fratuzzi. I entered a mysterious room where there were many men armed with guns sitting around a table. In the center of the table there was a skull drawn on a piece of paper and a knife. To be admitted to the Fratuzzi, I had to undergo an initiation consisting of some trials of loyalty and the pricking of the lower lip with the tip of the knife: the blood from the wound soaked the skull

In the United States

Valachi gave the most well-known description of the ceremony:

I sit down at the table. There is wine. Someone put a gun and a knife in front of me. The gun was a .38 and the knife was what we call a dagger. Maranzano [the boss] motions us up and we say some words in Italian. Then Joe Bonanno pricks my finger with a pin and squeezes until the blood comes out. What then happens, Mr. Maranzano says, 'This blood means that we are now one Family. You live by the gun and the knife and you die by the gun and the knife.'