Ulangan 17:6

17:6 At the testimony of two or three witnesses they must be executed. They cannot be put to death on the testimony of only one witness.

Ulangan 19:15

19:15 A single witness may not testify ¹  against another person for any trespass or sin that he commits. A matter may be legally established ²  only on the testimony of two or three witnesses.

[19:15]  ¹ tn Heb “rise up” (likewise in v. 16).

[19:15]  ² tn Heb “may stand.”