Following are a number of back-translations of Acts 2:21:

• Uma: «At that time, whoever calls out to the Lord will be lifted from the punishment of their sins.’ ‘ Those are the words of the prophet long ago foretelling the arrival of the Holy Spirit.» (Source: Uma Back Translation)
• Yakan: «And whoever will call/invoke/utter my name asking for mercy/pity from me,’ God said, ‘he will be saved.’ ‘» (Source: Yakan Back Translation)
• Western Bukidnon Manobo: «And at that time, whoever calls me, the Lord, for mercy, I will save him from punishment.’ ‘» (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: «And all they who ask-mercy of the Lord, they will be saved.’ That is what Joel prophesied,’ said Pedro.» (Source: Kankanaey Back Translation)
• Tagbanwa: «And it’s true, as many as are asking me for grace/help will be saved,’ says God.»» (Source: Tagbanwa Back Translation)
• Lalana Chinantec: «All those who ask help of our Lord will escape. That’s the way the word is that Joel put down on paper back then.
• Chuj: «‘Everyone who pleads to our Lord, they will be saved,’ said God.»
• Totontepec Mixe: «All who beseech the Owner will have their sins forgiven.» (source for this and two above: Viola Waterhouse in Notes on Translation August 1966, p. 86ff.)