Blooded Trebles

what do these lines from macbeth mean? 10 points?
What do these lines from Macbeth mean literally and also symbolically
thou art too like the spirit of banquo. Down!
thy crown does sear mine eyeballs and thy hair,
thou other gold-bound brow, is like the first.
A third is like the former.–Filthy Hags,
why do you show me this?– A fourth? start, eyes!
What will the line stretch out to th’ crack of doom?
Another yet? a seventh? i will see no more.
And yet the eigth appears who bears a glass
which shows me many more, and some i see
that twofold balls and treble scepters carry
Horrible sight! now i see ’tis true,
for the blood-boltered banquo smiles upon me
And points at them for his
please help i cannot understand shakespeare at all! 10 points to the most helpful answer! thanks for the help
The witches have shown MacBeth that Banquo will have many many heirs that will become king first they show him all 8 of them then they show him a miror that shows alot more and Mac Beth is getting really angry because he wants to be king and his heirs to be king, so (spoiler alert) he decides that he must kill his best friend Banquo to stop it from comming true…
Trebles Anna Blood Sugar