This rhetorical question can be translated as a statement. Alternate translation: "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. Alternate translation: "the family of your ancestor" (See: [[rc://en/ta/man/translate/figs-metonymy]])