Many languages distinguish between inclusive and exclusive first-person plural pronouns (“we”). The inclusive “we” specifically includes the addressee (“you and I and possibly others”), while the exclusive “we” specifically excludes the addressee (“he/she/they and I, but not you”). This grammatical distinction is called “clusivity.” While Semitic languages such as Hebrew or most Indo-European languages such as Greek or English do not make that distinction, translators of languages with that distinction have to make a choice every time they encounter “we” or a form thereof (in English: “we,” “our,” or “us”).
For this verse (“Lord, it is good for us to be here” in English translations), Yagua translators selected the exclusive form (excluding Jesus), Avaric translators chose the inclusive “nil'” (which includes Jesus).
Source: Paul Powlison in Notes on Translation with Drills, p. 165ff. and Magomed-Kamil Gimbatov and Yakov Testelets in The Bible Translator 1996, p. 434ff.