Deuteronomy 19:15

15 One witness may not make a statement against a man in relation to any sin or wrongdoing which he has done: on the word of two or three witnesses a question is to be judged.

Deuteronomy 19:15 Meaning and Commentary

Deuteronomy 19:15

One witness shall not rise up against a man for any iniquity,
or for any sin, in any sin that he sinneth
Whether capital sins, or pecuniary debts; or whatsoever sins a man may be guilty of whether sins against the first or second table of the law, whether greater or lesser sins, whether in moral or civil things; the Jews except only in the case of a woman suspected of adultery and of beheading the heifer:

at the mouth of two witnesses, or at the mouth of three witnesses,
shall the matter be established;
either for acquittance or condemnation; and the witnesses may not, as Jarchi says, write their testimony in a letter, and send it to the sanhedrim, nor may an interpreter stand between the witnesses and the judges; (See Gill on Deuteronomy 17:6).

Deuteronomy 19:15 In-Context

13 Have no pity on him, so that Israel may be clear from the crime of putting a man to death without cause, and it will be well for you.

14 Your neighbour's landmark, which was put in its place by the men of old times, is not to be moved or taken away in the land of your heritage which the Lord your God is giving you.

15 One witness may not make a statement against a man in relation to any sin or wrongdoing which he has done: on the word of two or three witnesses a question is to be judged.

16 If a false witness makes a statement against a man, saying that he has done wrong,

17 Then the two men, between whom the argument has taken place, are to come before the Lord, before the priests and judges who are then in power;