Then Rabshakeh stood; i.e. "rose from a sitting or reclining posture"—to attract attention, and the better to make himself heard. He continued his speech in Hebrew, and at the same time purposely raised his voice to a loud pitch.
The envoys would have been justified in ordering the archers to shoot him from the wall. But they seem to have been struck of a heap, as Epiphanes was by the audacity of Popillius (see the comment on the preceding verse).