"Go get some water,And wash this filthy witness from your hand.Why did you bring these daggers from the place?They must lie there: go carry them; and smear.The sleepy grooms with blood."
"I'll go no more:I am afraid to think what I have done;Look on't again I dare not."
"That I require a clearness: and with him— To leave no rubs nor botches in the work— Fleance his son, that keeps him company, Whose absence is no less material to me."
"I am in blood. Stepp'd in so far that, should I wade no more,Returning were as tedious as go o'er"
MacBeth murders Duncan and feels great guilt to the point , in which, he forgets to leave the bloody daggers to frame the chamberlains. This angers Lady MacBeth who takes the daggers back to the murder scene after her husband refuses. (II.ii)
MacBeth decides that he must have his best friend, Banquo, killed along with Fleance so that none of Banquo's sons will take his throne. (III.i)
After MacBeth was visited by the ghost of Banquo, MacBeth was frightened. However, he pulls himself together and concludes that its too far to go back now and he must continue his bloody mission to secure his throne. (III. iv)