'Disciples Asked' in the Bible

Now when he went indoors away from the crowd, his disciples asked him the meaning of this parabolic saying.

When he went indoors his disciples asked him in private, "Why could we not cast it out?"

So the disciples asked each other, "Can anyone have brought him something to eat?"

and his disciples asked him, "Rabbi, for whose sin ??for his own or for his parents' ??was he born blind?"