Luke 24:16

though they were prevented from recognizing Him.

John 20:14

While she was speaking, she turned round and saw Jesus standing there, but did not recognize Him.

John 21:4

When, however, day was now dawning, Jesus stood on the beach, though the disciples did not know that it was Jesus.

Treasury of Scripture Knowledge

Summary

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

Bible References

But they knew

Luke 24:16
though they were prevented from recognizing Him.
John 20:14
While she was speaking, she turned round and saw Jesus standing there, but did not recognize Him.
John 21:4
When, however, day was now dawning, Jesus stood on the beach, though the disciples did not know that it was Jesus.