Now+might+I+do+it+pat,+now+a'+is+a-praying+(3.3.73-96)

"Now I could do it easily, now he's at prayer. And now I'll do it. [He draws his sword] And then he would go to heaven. So much for my revenge! That needs further thought! A villain kills my father: and because of that, I - his only son - send this selfsame villain to heaven. Why, this is a helping hand, not revenge! he killed my father in a state of sin, not on a fast day , with all his crimes in full bloom, in his lusty prime. How his reckoning stands in heaven, who knows but God alone? By our worldly thinking, it looks very bad. And am I revenged, then, if I kill him while he is purging his sins, when he's thoroughly prepared for judgment? No. So I'll sheath my sword till a more sinful occasion turns up: when he is in a drunken sleep; in a rage; in bed indulging in incestuous pleasures; blaspheming while playing a game; or involved in some activity that has no trace of God's salvation in it. Then I'd trip him - his soul would be as damned and as black as hell, where he'd be bound to go, head first. My mother is waiting for me. This prayer merely prolongs your wretched life." (Shakespeare Made Easy)

"A villain kills my father, an for that I, his sole son, do this same villain send to heaven" (3.3.80-82) If Hamlet was to kill Claudius while he prayed, Claudius would go to heaven ensuring his eternal salvation. However, Hamlet wants Claudius to be eternally damned.

This is shown when Hamlet says "Then trip him, that his heels may kick at heaven and that his soul may be damned and black as hell, whereto it goes." (3.3.97-99) Hamlet realizes that he would be doing Claudius a favor by killing him then when he says "Why, this is hire and salary, not revenge." (3.3.83)

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