Deuteronomy 13:14

13:14 You must investigate thoroughly and inquire carefully. If it is indeed true that such a disgraceful thing is being done among you, ¹ 

Deuteronomy 19:18

19:18 The judges will thoroughly investigate the matter, and if the witness should prove to be false and to have given false testimony against the accused, ² 

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¹ tc Theodotian adds “in Israel,” perhaps to broaden the matter beyond the local village.

² tn Heb “his brother” (also in the following verse).