Genesis 42:8
And Joseph knew his brethren, but they knew not him.
Genesis 37:2
These are the generations of Jacob. Joseph, being seventeen years old, was feeding the flock with his brethren; and he was a lad with the sons of Bilhah, and with the sons of Zilpah, his father's wives: and Joseph brought the evil report of them unto their father.
Luke 24:16
But their eyes were holden that they should not know him.
John 20:14
When she had thus said, she turned herself back, and beholdeth Jesus standing, and knew not that it was Jesus.
John 21:4
But when day was now breaking, Jesus stood on the beach: yet the disciples knew not that it was Jesus.