'Cannot' in the Bible

Jesus said to them, "The wedding guests cannot fast while the bridegroom is with them, can they? As long as they have the bridegroom with them they do not fast.

He said to them, "Are you so foolish? Don't you understand that whatever goes into a person from outside cannot defile him?

In the same way even the chief priests -- together with the experts in the law -- were mocking him among themselves: "He saved others, but he cannot save himself!