Deuteronomy 17:4
and it be told you, and you have heard of it, then you shall inquire diligently; and behold, if it be true, and the thing certain, that such abomination is done in Israel,
Deuteronomy 13:12-14
If you shall hear tell concerning one of your cities, which the LORD your God gives you to dwell there, saying,
Deuteronomy 19:18
and the judges shall make diligent inquisition: and, behold, if the witness is a false witness, and has testified falsely against his brother;
Proverbs 25:2
It is the glory of God to conceal a thing, but the glory of kings is to search out a matter.
John 7:51
"Does our Law judge a man, unless it first hears from him personally and knows what he does?"