If you are honest men: honest is the same as in verse 11.

Let one of your brothers … prison: that is, “let one of you stay in prison” or “only one of you needs to stay in prison.” Other ways of expressing this are “one of you must stay here in prison” and “I will keep one here in the jail.”

Let the rest go and carry grain … households: that is, “and the rest of you may take grain to your hungry families.” Taking account of the fact that all the brothers have been in prison, some translations say “I will release the rest of you to go….”

Quoted with permission from Reyburn, William D. and Fry, Euan McG. A Handbook on Genesis. (UBS Helps for Translators). New York: UBS, 1997. For this and other handbooks for translators see here .