'Single' in the Bible

{The testimony of a single witness may not be used to convict} [with respect to] any crime and for any wrongdoing in any offense that a person committed; on the {evidence} of two witnesses or on the {evidence} of three witnesses {a charge shall be sustained}.

And Yahweh will single him out for calamity out of all the tribes of Israel, according to all the curses of the covenant written in the scroll of this law.