Review malcolm's last speech in act v, scene 8. how are his words an echo of duncan's language earlier in the play

Duncan, through the first act of the play, shows why he is such a great King by using language that compliments and encourages all of his subjects and fighters. He welcomes Banquo and Macbeth equally, and shows that Macbeth is a fighter with whom he has been putting in the effort to watch and help him grow (comparing him to a tree). Malcolm echoes this language by promoting all of the Thanes to Earls, showing that he is investing his time and support into each of them like Duncan did. 

The answer might be a hope