'Witnesses' in the Bible

Based on the testimony of two or three witnesses, they must surely die. But they are not to die based on the testimony of one person.

Let the witnesses be the first to begin executing them, then the rest of the people shall follow. By doing this you will purge evil from among you."

"The testimony of one person alone is not to suffice to convict anyone of any iniquity, sin, or guilt. But the matter will stand on the testimony of two or three witnesses.

and they are to make this declaration: "Our hands didn't shed this blood, nor were we witnesses to the crime.

Gather together the leaders of your tribes and your foremen so I can speak these words in their hearing and call heaven and the earth as witnesses against them,