The Sermon on the Mount begins with one of the most recognizable and repetitive blocks of speech ever recorded. Blessed are you is the repetition. Blessed are you gets its hooks in you because Jesus says it over and over and over again. If you want someone to remember something you’ve said, say it again and again. The repetition, however, is not the only reason the statements Jesus made are memorable.
A good number of the blessed ones stand in sharp contrast to whom one would expect the blessed ones to be. Pretend, for a moment, you don’t know who the first blessed one is. If I said to you “blessed are the…” and then I asked you to fill in the blank, do you think you would choose poor in spirit?