Following are a number of back-translations of John 15:8:

• Xicotepec De Juárez Totonac: “If you give very much fruit, if you do very much what God wants, in this manner you honor the Father and thus it shows that you are really my disciples.”
• Aguaruna: “When you give much fruit and the people see that, they will say, ‘Surely he is Jesus’ follower.’ When you do this they will praise my Father.”
• Ojitlán Chinantec: “In that way you make my Father big, doing much good so that people know that truly you are my disciples.”
• Yatzachi Zapotec: “My Father receives honor when you do very much the things which he likes and also you are showing that you are following me like you should, if you are doing very much the things that he likes.” (Source for this and above: M. Larson / B. Moore in Notes on Translation February 1970, p. 1-125.)
• Uma: “If you bear much fruit, my Father is made big. If like that your behavior, you are really my followers.” (Source: Uma Back Translation)
• Yakan: “If you do much good, my Father will be praised and it will also be known that you are truly my disciples.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “If you continue fruiting, which is to say, if your works are always good, people will praise my Father God, and it will be known that you truly are my disciples.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “This is wherein-my Father -is-honored, if your faith has much fruit, and this also is how you will show that you are my disciples.” (Source: Kankanaey Back Translation)
• Tagbanwa: “The praiseworthiness/glory of my Father is apparent when/if the fruit of your believing/obeying is plentiful and growing well in your life. If it’s like that, it’s proof that you are my disciples.” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “My Father will be respected when you live good lives. This also will make it apparent that you are my learners.” (Source: Tenango Otomi Back Translation)