Parallel
Genesis 42:23
Rahlfs Septuagint (1935) · Berean Standard Bible
αὐτοὶ δὲ οὐκ ᾔδεισαν ὅτι ἀκούει Ιωσηφ ὁ γὰρ ἑρμηνευτὴς ἀνὰ μέσον αὐτῶν ἦν
They did not realize that Joseph understood them, since there was an interpreter between them.