# because your arrogance has reached my ears

"because I have heard your proud words" 

# I will put my hook in your nose, and my bit in your mouth

"I will lead you like an animal". A "hook" and a "bit" (to control a horse) refer to Yahweh's control of Sennacherib. 

# I will turn you back the way you came

"I will make you return to your own country the same way you came, without conquering Jerusalem"