What does lennoxs sarcastic tone in scene 6 lines 1-24 suggest about macbeths future as king?

The sarcastic undertone in Lennox's tone hints at Macbeth's future downfall and the growing discontent among his subjects. Lennox remarks that Macbeth "loves for his own ends, not for you," exposing the king's selfish nature and lack of genuine care for his people. This criticism suggests that Macbeth will not be able to maintain the support and loyalty of his kingdom in the long run, setting the stage for his inevitable downfall.