Joseph knew they were his brothers, but they did not know who he was.
This is the family history of Jacob: Joseph was a young man, seventeen years old. He and his brothers, the sons of Bilhah and Zilpah, his father’s wives, cared for the flocks. Joseph gave his father bad reports about his brothers.
Joseph was thirty years old when he began serving the king of Egypt. And he left the king’s court and traveled through all the land of Egypt.
but they were kept from recognizing him.
When Mary said this, she turned around and saw Jesus standing there, but she did not know it was Jesus.
Early the next morning Jesus stood on the shore, but the followers did not know it was Jesus.