Act I Scene IV Lines 22–27 that reflect the duties of a king’s subjects. are these duties are appropriate? Does think Macbeth?

Duncan is pretty impressed with Macbeth. He is happy that Macbeth was responsible for beating back the Norwegian army. He says to Macbeth ,

That the proportion both of thanks and payment Might have been mine! Only I have left to say, More is thy due than more than all can pay.

Duncan is speaking a little in hyperbole here, but he means that Macbeth will profit from his heroic acts in war. Really , a king doesn't have to give his subjects anything, but Duncan is gracious and appreciative of Macbeth.