Following are a number of back-translations of Matthew 21:21:

• Uma: «Yesus said: ‘Truly I say to you, if you believe and are not doubting/hesitant, you also will be able to do like what I did to that tree earlier. And not only that, you will be able to say to this mountain: ‘Be lifted up, make-yourself(s)-fall into the sea!’ that will certainly happen.» (Source: Uma Back Translation)
• Yakan: «Isa said to them, ‘Truly I tell you, if you trust and really do not doubt, you can do as I did to that tree. And not only that can you do. If you say to this mountain, ‘O mountain, leave and throw yourself into the sea,’ it will do what you said.» (Source: Yakan Back Translation)
• Western Bukidnon Manobo: «‘Don’t forget,’ said Jesus, ‘that if you trust in God and you do not doubt, you can do this which I have done to this fig tree. And not only this, because even if you say to that mountain, ‘Leave there and jump into the seas,’ it will obey you.» (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: «‘This that I tell you is true,’ said Jesus answering. ‘If you have trust in God, not doubting that what you say will be fulfilled, you can-do like what I did to this tree. Not only that but it-is-possible also for you to say to this hill, ‘Go-away from here and go jump in the ocean,’ and it will be fulfilled.» (Source: Kankanaey Back Translation)
• Tagbanwa: «Jesus answered, saying, ‘Think about this. If your belief-in/obeying-of God is really true, not uncertain, you could also do like I did to this igos. Not just that only, but if you say to this hill, ‘Go away from there, throw yourself into the ocean,’ what you said will happen.» (Source: Tagbanwa Back Translation)
• Tenango Otomi: «Jesus said to his learners: ‘When you believe that what you ask God is what he wants and you do not doubt in your hearts, then not only what you saw that I did to the tree will you be able to do, even you will be able to say to that hill there: ‘Move away hill, go to where the sea is,’ you will say. Then the hill will move away and go to where you tell it to go.» (Source: Tenango Otomi Back Translation)