The Greek in Acts 3:21 that is translated as “until the time of universal restoration (or: restoration of all things”)” or similar in English is translated in various wayz
“until then when everything will be renewed” in Isthmus Mixe
“the day is coming that God will fix this earth” in Highland Popoluca
“he will come to make good again everything one time more” in Chuj
“when God will make everything good like it was in the beginning” in San Mateo Del Mar Huave
“until he comes to straighten things out” in Rincón Zapotec (source for this and above: Viola Waterhouse in Notes on Translation August 1966, p. 86ff.)
The Hebrew and Greek that is translated in English as “will not be shaken” or similar is translated in Enlhet as “innermost will not fall.” “Innermost” or valhoc is a term that is frequently used in Enlhet to describe a large variety of emotions or states of mind (for other examples see here). (Source: Jacob Loewen in The Bible Translator 1969, p. 24ff. )
Following are a number of back-translations of Acts 2:43:
Uma: “Many powerful things and amazing signs were done/made by the apostles of Lord Yesus. That’s why the crowds were very much afraid.” (Source: Uma Back Translation)
Yakan: “Many works of power and works causing-wonder were done by the persons/men commissioned by Isa, that’s why the people really feared God.” (Source: Yakan Back Translation)
Western Bukidnon Manobo: “There were many miracles and signs which were done by means of the apostles. That’s why the people were filled with the fear of God.” (Source: Western Bukidnon Manobo Back Translation)
Kankanaey: “There were many amazing miracles that God was having-the apostles -do, and the many-people were greatly amazed.” (Source: Kankanaey Back Translation)
Tagbanwa: “Many were the signs which were amazing things which the apostles were being able to do, that’s why everybody respected/honored God with fear.” (Source: Tagbanwa Back Translation)
Morelos Nahuatl: “All the people feared God. They wondered because God helped the apostles to do inexplicable deeds and marvels.”
Metlatónoc Mixtec: “Each one of them was awed because many miracles and signs there were that those who bore the Word of God did.”
Desano: “Many people respected them and the chosen ones of God did many things by the power of God.” (Source for this and two above: Viola Waterhouse in Notes on Translation August 1966, p. 86ff.)