"Be bloody, bold, and resolute; laugh to scorn / The power of man, for none of women born shall harm Macbeth" (IV, i, 78-80). To Macbeth this appears to mean that no man can defeat him as without a woman a birth cannot occur.
This appearance gives him the false security that he will not be defeated in combat by another man.
This apparition states that Macbeth shall never be defeated until the Great Birnam Wood forest moves to Dunsinane Hill.
Through Macbeth's eyes this apparition would appear to say that he would never be defeated because the Great Birnam Wood forest cannot move itself to Dunsinane Hill.
This appearance once again gives him a false sense of security that he will never be defeated as trees cannot move.
In strong contrast however is the reality that this apparition was an equivocation.
On the second visit the Witches show Macbeth three apparitions.
Two of these apparitions were equivocations in order to mislead Macbeth.
This also foreshadows the plans the witches will profess in Duncan.
During the time in which Macbeth's conscience is still intact, the scene of the angel versus the devil haunts Macbeth.