"He is here in double trust."-explain

This line is the part of Macbeth's famous soliloquy in Act 1 scene 7 of Macbeth by William Shakespeare which he makes before the murder of Duncan. Although Macbeth has already decided to commit the murder, yet he is troubled by certain doubts in the matter. He thinks of the evil consequences which he is likely to face as a result of the crime that he is going to do.

      Before murdering Duncan, Macbeth thinks of the moral objections to the crime. King Duncan is staying at his house as a guest, and Macbeth has double responsibilities towards this guest.

      First, Macbeth is Duncan's relative and Duncan's subject. This should be a strong reason to prevent Macbeth from murdering Duncan. secondly, Macbeth is Duncan's host, it is Macbeth's duty to defend Duncan against any possible murder and not to injure him with his own hand.

       Macbrth's conflicting and complex state of mind is well-revealed in this line. This line shows Macbeth's conscience is still alive. This line also shows that Macbeth is not a seasoned trailor .The seeds of trason certainly excited his mind, but they began to sprout only as a consequence of the witches's prophecies. Macbeth's soliloquy also shows his introspective nature and his analytical mind.