Genesis 42:8
And Joseph knew his brothers, but they did not know him.
Genesis 37:2
These are the generations of Jacob: Joseph, a son of seventeen years, came tending the flock with his brothers. And he was a youth with the sons of Bilhah, and with the sons of Zilpah, his father's wives. And Joseph brought to his father an evil report of them.
Luke 24:16
But their eyes were held so that they could not know Him.
John 20:14
And when she had said this, she turned backward and saw Jesus standing, but she did not know that it was Jesus.
John 21:4
But when the morning had come, Jesus stood on the shore. But the disciples did not know that it was Jesus.