This rhetorical question can be translated as a statement. AT: "You should know that I revealed myself ... house." (See: [[rc://en/ta/man/translate/figs-rquestion]])
The word "house" is a metonym for the people who lived in the house. AT: "the family of your ancestor" (See: [[rc://en/ta/man/translate/figs-metonymy]])
The words "wear an ephod" are a metonym for the work of the priests who wear the ephod. AT: "to do what I had commanded the priests to do" (See: [[rc://en/ta/man/translate/figs-metonymy]])