In case of property the oath of a single person will suffice where no other evidence can be had.
Ex. XXII, 10. If a man deliver unto his neighbor an ass, or an ox, or a sheep, or any beast, to keep; and if it die, or be hurt, or driven away, no man seeing it:
11. Then shall an oath of the Lord be between them both, that he hath not put his hand unto his neighbor's goods; and the owner of it shall accept thereof, and he shall not make it good.
One witness not sufficient in criminal cases.
Num. XXXV, 30. Whoso killeth any person, the murderer shall be put to death by the mouth of witnesses: but one witness shall not testify against any person to cause him to die.
Deut. XVII, 6. At the mouth of two witnesses, or three witnesses, shall he that is worthy of death be put to death; but at the mouth of one witness he shall not be put to death.
Heb. X, 28. He that despised Moses' law died without mercy under two or three witnesses.
1 Tim. V, 19. Against an elder receive not an accusation, but before two or three witnesses.
Deut. XIX, 15. One witness shall not rise up against a man for any iniquity, or for any sin, in any sin that he sinneth: at the mouth of two witnesses, or at the mouth of three witnesses, shall the matter be established.
Matt. XVIII, 16. But if he will not hear thee, then take with thee one or two more, that in the mouth of two or three witnesses every word may be established.