Following are a number of back-translations of Hebrews 12:19:

• Uma: “They heard a big sound that was like the sound of a trumpet, and a big voice spoke to them. When they heard that voice, they were terrified, they said: ‘We(excl.) request that that voice there not speak to us any more, for we are afraid [poor us!].'” (Source: Uma Back Translation)
• Yakan: “They heard (something) like the sound of a tabuli’ (a big shell blown to give signals) and they also heard the voice of God. When the people heard that voice they really begged that it wouldn’t speak again because they were very afraid.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “They could hear the trumpet and the loud voice of God, and when the people heard that voice they begged that He might stop talking because it was very frightening.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “They also heard the trumpet and the frightening voice of God. When they heard that aforementioned voice of God, they begged that it not continue,” (Source: Kankanaey Back Translation)
• Tagbanwa: “There was the sound of a horn/siren and a voice which spoke. After the people heard that voice, they were asking that they would no more be spoken to by that.” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “They heard the trumpets sound. They heard God speak and call to them. These people feared when they heard him call to them. Therefore they asked that no longer would they hear what word God would speak.” (Source: Tenango Otomi Back Translation)