The "heart" was associated with emotions. The Edomites' pride caused them to be deceived about their security. AT: "Your pride has deceived you" or "Your pride causes you think you are safe" (See: [[rc://en/ta/man/translate/figs-metonymy]])
This question expresses that the Edomites were proud and felt safe. AT: "No one can bring me down to the ground." or "I am safe from all attackers." (See: [[rc://en/ta/man/translate/figs-rquestion]])
Both of these exaggerations say that Edom is built in a very high place by saying it is built much higher than possible. AT: "And I tell you that even if you had wings and could fly higher than eagles fly, and if you could make your homes among the stars" (See: [[rc://en/ta/man/translate/figs-hyperbole]] and [[rc://en/ta/man/translate/figs-parallelism]])
Pride is associated with height while humility is associated with being low. To "bring down" is an idiom that means to humble someone. AT: "I will humble you" (See: [[rc://en/ta/man/translate/figs-idiom]])