John 3:9
Nicodemus answered, how can that be?
John 6:52
Upon this the Jews disputed among themselves, saying, how can this man give us his flesh to eat?
John 6:60
when many of his disciples, who heard him, said, this is strange doctrine, who can hear it?
Luke 1:34
Then said Mary to the angel, what shall this be without any intercourse with man?
Mark 8:24-25
so looking up, he said, I see men; for by their walking I distinguish them from trees.
John 3:4
Nicodemus replied, how can a man be born when he is old? can he enter into his mother, and be born a second time?