Deuteronomy 21:7

The elders, in the name of all the citizens, take an oath of purgation. The publicity and solemnity of the ceremony must have had a powerful effect upon the public conscience, and in some cases no doubt assisted in the discovery of the murderer.

10-14. On the Marriage of Captive Women. This rule does not apply to Canaanitish women, whom the Israelites were forbidden in any circumstances to marry: see Deuteronomy 7:3; Deuteronomy 19:16.