Read it through once

MACBETH. Blood hath been shed ere now, i’ th’ olden time, Ere humane statute purg’d the gentle weal; Ay, and since too, murders have been perform’d Too terrible for the ear: the time has been, That, when the brains were out, the man would die, And there an end; but now they rise again, With twenty mortal murders on their crowns, And push us from our stools. This is more strange Than such a murder is.