John 21:4

New King James Version

But when the morning had now come, Jesus stood on the shore; yet the disciples did not know that it was Jesus.

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Now when she had said this, she turned around and saw Jesus standing there, and did not know that it was Jesus.

Then their eyes were opened and they knew Him; and He vanished from their sight.

After that, He appeared in another form to two of them as they walked and went into the country.

So Joseph recognized his brothers, but they did not recognize him.