If anyone kills a person, the murderer is to be put to death on the testimony of the witnesses. But no one is to be put to death based on the testimony of a lone witness.
30. Whoso killeth any person, He now returns to willful murderers, whom he will not have spared, but yet not given over to punishment unless convicted by legal proofs. Literally it is, Whoso smiteth a soul, at the mouth of witnesses he shall slay him that slayeth: and this sentence is obscure, from its brevity, unless a noun be supplied before the second verb; and...
Whoso killeth any person,.... Willingly, and through enmity and malice: the murderer shall be put to death by the mouth of two witnesses; which is repeated partly to show, that this law concerning the cities of refuge was not designed to screen a murderer, who was guilty through malice prepense; and partly for the sake of what is added to it, that two witnesses are...
But one witness shall not testify against any - This was a just and necessary provision. One may be mistaken, or so violently prejudiced as to impose even on his own judgment, or so wicked as to endeavor through malice to compass the life of his neighbor: but it is not likely that two or more should be of this kind; and even were they...