Following are a number of back-translations of Matthew 12:35:

• Uma: “People who are good, definitely speak words that are good, because they continually think-about good [things/matters]. So also evil people, their words are also evil, because they continually think about evil [things/matters].” (Source: Uma Back Translation)
• Yakan: “A good person has good customs and says good things because he is/has good in his liver. But a bad person because he is/has bad in his liver therefore his customs and his speech are bad.” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “A person whose custom is good, what he says also is good. A person whose custom is bad, what he says is also bad.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “The good person, what he brings-out is good, because of-course what is stored in his mind is good. But the bad person, what he brings-out is bad, because of-course what is stored in his mind is bad.” (Source: Kankanaey Back Translation)
• Tagbanwa: “Because as for a person whose nature/ways are good, what comes out of his mouth is always good, because wholly good is what he stores in his mind. However as for the person who stores wholly evil in his mind, wholly evil indeed comes out of his mouth.” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “The good person speaks the good word because his heart is good. But the person whose heart is not good has evil words in his heart and these come from his mouth.” (Source: Tenango Otomi Back Translation)
• German New Testament translation by Berger / Nord (publ. 1999): “Like a large chest, a person’s heart contains a store from which he draws what he shares with others. If the heart contains a treasure, then what a person passes on is good. If it contains only worthless junk, he is passing on bad things.”