In the opening of scene 7, Macbeth questions if it really is a good idea to kill Macbeth or not. He feels conflicted because that violence is not the answer. He thinks that "Bloody instructions, which being taught, return to plague th'inventor."(1.7.9-10) Here he's saying that if people teach violence to a student, then that student will turn on the instructor and use the violence on the. Macbeth thinks that if he kills Duncan, then when he is King, someone close to him will also use violence to kill him. MAcbeth is also conflicted because "He's here in double trust: First, as I am his kinsman and his subject, strong both against the deed; then, as his host, who should against his murderer shut the door, not bear the knife myself"(1.7.13-16) Macbeth explains that Duncan trusts him for two reason: because he is his subject and fights for him and he is also a guest as his house. He explains that if someone were to try and kill the King Macbeth should be the one to protect him not use the knife to kill him. He also says that "this Duncan hath borne his facilities so meek, hath been so clear in his great office"(1.7.16-18) MAcbeth talks about the fact that there is no corruption during Duncan's time in office and there is no real reaso to kill him besides his ambition.