"And those which remain shall hear, and fear, and shall henceforth commit no more any such evil among you" (Deuteronomy 19:20), see also Deuteronomy 17:13.
"Ba ba salang [kgotsa ba ba bonang fa molao wa Modimo o latelwa] ba tla utlwa ba bo ba boifa, mme ba ka se tlhole ba dira sepe se se bosula jaaka seno gape mo gare ga gago." - Duteronome 19:20.