Following are a number of back-translations of 1 John 2:25:

• Uma: “And this is his promise to us: good life forever.” (Source: Uma Back Translation)
• Yakan: “And this is hep what Almasi promised, that he would give us (incl.) life forever.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “For what Christ has promised us is life forever.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “because this just the same is the life that has no end that Cristo promised to us.” (Source: Kankanaey Back Translation)
• Tagbanwa: “And this is what God promised us, life which has no ending.” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “And Jesus Christ also promised that he will give us the new life forever.” (Source: Tenango Otomi Back Translation)
• Yatzachi Zapotec: “Jesus Christ promised us this, that he will give us eternal life.”
• Eastern Highland Otomi: “And he himself said truly that he will give us the new life of our hearts, which is now and will never end.”
• Tzotzil: “Because Jesus Christ told us that he gives us our life forever.” (Source for this and two above: John Beekman in Notes on Translation 12, November 1964, p. 1ff.)
• Candoshi-Shapra: “Didn’t He himself say, ‘I will give you eternal life’?”
• Yanesha’: “This is what he tild us he would give us, of a truth, thus we will not always be in a mortal state (capable of dying) forever.”
• Aguaruna: “He has promised to us always life.” (Source for this and two above: Mildred Larson in Notes on Translation, July 1965, p. 1-15)