John 3:9

Nicodemus said to him, "How can that be?"

This led the Jews to dispute with one another. They said, "How can he give us his flesh to eat?"

Many of his disciples on hearing it said, "This is a harsh teaching! Who can listen to it?"

Mary said to the angel, "How can this be, when I have no husband?"

He looked up and said, "I can see people, for they look to me like trees, only they are moving about."

Nicodemus said to him, "How can a man be born when he is old? Can he enter his mother's womb over again and be born?"

Treasury of Scripture Knowledge

Nicodemus answered and said unto him, How can these things be?

For it is always the one who asks who receives, and the one who searches who finds, and the one who knocks to whom the door opens.

So they said to him, "Then how does it happen that you can see?"