“So Jesus said, Do you also still not understand?” Matthew 15:16. What lessons we need day by day to teach us anything aright, and how it is for the most part, “line upon line, line upon line; here a little, and there a little.” O, what slow learners!—what dull, forgetful scholars!—what ignoramuses!—what stupid blockheads!—what stubborn pupils! Surely no scholar at a school,…