Following are a number of back-translations of 2 John 1:11:

• Uma: «For the people who greet them, it’s the same as accompanying/going-along-with them in their evil work.» (Source: Uma Back Translation)
• Yakan: «Because whoever greets him, it is as if he joins in his bad doings.» (Source: Yakan Back Translation)
• Western Bukidnon Manobo: «For even if you merely welcome him, you inadvertently help him in his evil behaviour.» (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: «Because if you do that, you will be helping (him) in the evil that he is doing.» (Source: Kankanaey Back Translation)
• Tagbanwa: «Because whoever makes-friends with him, he is causing himself to be in harmony with that evil he’s doing.» (Source: Tagbanwa Back Translation)
• Tenango Otomi: «Because the one who greets him does just as though he encourages him to teach the word which isn’t right.» (Source: Tenango Otomi Back Translation)
• Yatzachi Zapotec: «If we tell him, ‘Come in, brother’, it means that together we are doing evil.»
• Eastern Highland Otomi: «Because whoever asks God’s help in regard to him, it is just as though he helped his bad deeds.»
• Isthmus Zapotec: «Because one who tells him to enter also is erring as he is erring.» (Source for this and three above: John Beekman in Notes on Translation 12, November 1964, p. 1ff.)