'Murderer' in the Bible

"Whoever uses an iron implement to kill someone is to be adjudged a murderer, and that murderer is certainly to be put to death.

Furthermore, whoever uses a stone implement to kill someone is to be adjudged a murderer, and that murderer is certainly to be put to death.

Also, whoever uses a wooden implement to kill someone with it is to be adjudged a murderer, and that murderer is certainly to be put to death.

The blood avenger himself is to execute the murderer. When he meets him, the blood avenger is to put him to death.

"Every murderer of a human being is to be executed only according to testimony given by multiple witnesses. A single witness is not to result in a death sentence.