In Act 4, Sc. 1, Lines 50–61: What does this speech suggest about Macbeth? How does the speech support a theme?

I conjure you by that which you profess—
Howe'er you come to know it—answer me.
Though you untie the winds and let them fight
Against the churches, though the yeasty waves
Confound and swallow navigation up,
Though bladed corn be lodged and trees blown down,
Though castles topple on their warders' heads,
Though palaces and pyramids do slope
Their heads to their foundations, though the treasure
Of nature’s germens tumble all together...

In this section, we learn that Macbeth is demanding and rather reckless. He isn't thinkng of anyone else..... only himself. It also supports the theme of the supernatural.