Matthew 16:11

How is it that ye do not understand? — True to His method of education our Lord does not Himself interpret the parable, but is, as it were, content to suggest the train of thought which led to the interpretation. And the disciples, slow of heart as they were, followed the clue thus given. “Then understood they.” Memory did at last quicken faith, and faith imparted the imaginative insight which sees its way through parables and dark sayings.