The phrase "us hear you say" refers to the Danites hearing Micah speaking about what had happened, but it also includes if they are told by others that Micah had spoken about what had happened. Alternate translation: "let us find out that you have said anything" or "say anything about this" (See: [[rc://en/ta/man/jit/figs-metonymy]])
The word "anything" refers to any information about the Danites coming to Micah's house and stealing his idols. This can be stated clearly. Alternate translation: "hear you say anything about this matter" or "hear you say anything about what has happened" (See: [[rc://en/ta/man/jit/figs-explicit]])