MACBETH

Loyal soldier/ servant to the king

He's here in double trust: First, as I am his kinsman and his subject, Strong both against the deed; then, as his host, 15 Who should against his murderer shut the door, Not bear the knife myself.

murderer

"That is a step on which I must fall down, or else o'erleap, for in my way it lies."

Indestructable King

'I bear a charmed life, which must not yield/To one of woman born."