Génesis 42

They were not conscious that the sense of their words was clear to Joseph, for he had been talking to them through one who had knowledge of their language.

Y ellos no sabían que los entendía José, porque había intérprete entre ellos.

And they knew not that Joseph understood them; for he spake unto them by an interpreter.

They didn’t know that Joseph understood them; for there was an interpreter between them.