Deuteronomy Chapter 13, Verse 14

14: Then shalt thou enquire, and make search, and ask diligently; and, behold, if it be truth, and the thing certain, that such abomination is wrought among you;- edit KJV text
14: Inquire carefully and diligently, the truth of the thing by looking well into it, and if thou find that which is said to be certain, and that this abomination hath been really committed,— edit Douay text
14: then thou shalt enquire and ask, and search diligently, and behold, [if] the thing is clearly true, and this abomination has taken place among you,— edit LXX text