The lines that lead the reader to the conclusion that Macbeth has decided to kill the king are: "I am settled, and bend up / Each corporal agent to this terrible feat."
Macbeth is a tragedy written by William Shakespeare which dramatises the damaging physical and psychological effects of political ambition on those who seek power for its own sake.
Macbeth is a Scottish noble and a valiant military man. After a supernatural prophecy, and at tbeing convnced by his wife, Lady Macbeth, he kills the king and becomes King of Scotland.