71.34 δεῖa: to be that which must necessarily take place, often with the implication of inevitability—‘to be necessary, must.’
53.94 γραμματεύςa, έως m: a recognized expert in Jewish law (including both canonical and traditional laws and regulations)—‘one who is learned in the Law, expert in the Law’ or ‘… Law of Moses.’ πῶς λέγουσιν οἱ γραμματεῖς ὅτι ὁ Χριστὸς υἱὸς Δαυίδ ἐστιν; ‘how can the experts of the Law say that the Messiah will be the descendant of David?’ Mk 12:35.
We must try to catch the tone of voice in which Jesus spoke. He certainly did not say it with a snarl of anger in his voice and a blaze of indignant passion in his eyes. He said it like a man wounded to the heart, with poignant grief and a kind of shuddering horror.