וַיַּכֵּ֥ר יוֹסֵ֖ף אֶת־אֶחָ֑יו וְהֵ֖ם לֹ֥א הִכִּרֻֽהוּ׃
José, pues, conoció á sus hermanos; pero ellos no le conocieron.
Targum Jonathan on Genesis
Now Joseph recognised his brethren, because, when separated from them, they had the token of the beard; but they did not recognise him, because (at that time) he had not the token of the beard, and at this hour he had it.