And Adonijah and all the guests that were with him heard it as they had made an end of eating. And when Joab heard the sound of the trumpet, he said, Wherefore is this noise of the city being in an uproar? (1 Kings 1:41)
With Solomon was a group of people who hailed the coronation of the new king with unrestrained delight and with shouts of joyous acclaim. With Adonijah was a company of conspirators just completing their festivities, which must, however, have been clouded by a measure of ill-concealed anxiety and apprehension. The sound of the trumpet that was to the one group a note of triumph came to the other as a note of doom. The quick ear of the seasoned warrior, Joab, was not slow in catching the significance of what was going on.