Following are a number of back-translations of John 12:39:

• Uma: «So, they are not able to believe, because there is also the Word of God that was written by the prophet Yesaya long ago, that says:» (Source: Uma Back Translation)
• Yakan: «More yet, Nabi Isaya also wrote the reason as to why they don’t believe. Isaya says,» (Source: Yakan Back Translation)
• Western Bukidnon Manobo: «,» (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: «The reason it was not possible for them to believe, Isaias also wrote that saying,» (Source: Kankanaey Back Translation)
• Tagbanwa: «Well since they weren’t wanting to believe/obey, that’s why they were no longer able to believe/obey, like something else Isaias said, saying,» (Source: Tagbanwa Back Translation)
• Tenango Otomi: «Isaiah also wrote why they didn’t believe. He said,» (Source: Tenango Otomi Back Translation)