Following are a number of back-translations of James 2:18:

• Uma: “Perhaps there will be someone who will say like this: ‘One person trusts in his faith, another person trusts in his good behavior.’ Yet I say: you (sing.) cannot show me that faith of yours(s) if your (sing.) behavior is not good. But I, from my good behavior, I show you (sing.) that I also have faith in the Lord.” (Source: Uma Back Translation)
• Yakan: “But perhaps someone wants to argue. Perhaps he says, ‘Never mind, for the people don’t follow God (all) in the same way. Some trust in God. Some do good.’ So-then this is also what I answer him, ‘Make sure to me that you are truly trusting God even if you don’t have good works along with it (lit. cause-to-follow-with). And I also will make sure to you that I truly trust because of my good works.'” (Source: Yakan Back Translation)
• Western Bukidnon Manobo: “If someone says, ‘One believes in God so that he might be freed from punishment, and as for another person, he does good so that he might be freed and both of them are right.’ But what my answer is to the two is: it’s necessary that we believe, but it cannot be that our faith in God is true if that faith of ours cannot be perceived by means of our good behaviour. It is necessary that we show our faith by means of our actions.” (Source: Western Bukidnon Manobo Back Translation)
• Kankanaey: “But there is perhaps someone who will debate saying, ‘There are indeed many-different ways in which people believe, because the one, he has faith only, but the other, it’s good deeds only that he has.’ If someone says that, here also is my answer. ‘All right then, if you (sing.) believe only, how perhaps will you (sing.) show the truth of your (sing.) faith? Because as for me, I will confirm my faith by what I am doing.'” (Source: Kankanaey Back Translation)
• Tagbanwa: “But maybe there’s someone who wants to argue/disagree, saying, ‘As for one, the believing which has been graced to him is his far-from-ordinary trusting-in/relying-on God. As for another, what has been graced to him is doing good works.’ But my answer to that is, ‘There’s no dividing-place between true believing and good works. Cause me to comprehend how I can recognize whether there is truth to that believing of yours(s) which has nothing you are doing which testifies that you belong to the Lord. As for me, the things I do testify that my believing really is true.'” (Source: Tagbanwa Back Translation)
• Tenango Otomi: “Suppose there is someone who says: ‘Now there are some who have their faith, and also there are some who do good,’ he says. I will say to them, ‘How can it be apparent that you have faith and there is not a bit of good to be seen in what you do? For my part, you can know that I have faith by means of the good I do,’ I will say.” (Source: Tenango Otomi Back Translation)