Following are a number of back-translations of Romans 11:8:

• Uma: “As it was written long ago in the Holy Book: ‘God gave them a stubborn [lit., stiff] heart. He closed their eyes so they won’t see the true road. He stopped their ears so they won’t hear the true message. up to the present time.'” (Source: Uma Back Translation)
• Yakan: “There is something the holy-book says about these people whose heads are hard. The holy-book says, ‘God has made their thoughts/minds dull. Until now it is as if they do not see even though they have eyes, it is as if they do not hear even though they have ears.'” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “For there is a written word of God which says, ‘God made their minds to become numb so that they might not understand. And up till now they don’t know what is right and they don’t understand what is proper.'” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “This very-thing is what God caused-to-be-written is talking-about saying, ‘God made their minds like the mind of a sleeping person. So until today, even though they have eyes, they are not able-to-see and even though they have ears, they are not able-to-hear.'” (Source: Kankanaey Back Translation)
• Tenango Otomi: “It says in the Holy Book: God caused that the people do not understand the word they hear. They do not understand about what they see. They will hear the words but will not understand about the words they will hear. This happened in past days and this again is happening now.'” (Source: Tenango Otomi Back Translation)
• Huehuetla Tepehua: “And since that is the way they were done to, it was fulfilled like it is written where it says this: God made their hearts stupid. In this way, even though they read the truth, they don’t understand. And even though they hear the truth, they don’t believe. And that is the way it is even until now.” (Source: Waterhouse / Parrott in Notes on Translation October 1967, p. 1ff.)