Genesis 42:8
Joseph knew his brethren, but they knew not him.
Genesis 37:2
And these are the generations of Jacob. When Joseph was seventeen years old, he kept sheep with his brethren, and the lad was with the sons of Bilhah and of Zilpah his father's wives. And he brought unto their father an evil saying that was of them.
Luke 24:16
But their eyes were holden, that they could not know him.
John 20:14
When she had thus said, she turned herself back and saw Jesus standing, and knew not that it was Jesus.
John 21:4
But when the morning was now come, Jesus stood on the shore. Nevertheless, the disciples knew not that it was Jesus.