Genesis 42:8

And Joseph knew his brethren, but they knew not him.
— Genesis 42:8, King James Version

In other translations

World English Bible (WEB)

Joseph recognized his brothers, but they didn't recognize him.

American Standard Version (ASV)

And Joseph knew his brethren, but they knew not him.

Young's Literal Translation (YLT)

And Joseph discerneth his brethren, but they have not discerned him,