Jaime's revelation on why he became a kingslayer

In a soul-stirring monologue in S03E05, he revealed why he had to kill the Mad King⁠ even if it meant being an oathbreaker. At that moment, in all of his nakedness, the viewers saw a new light to the Kingslayer. Perhaps, Jaime's one of the most honorable on the show despite being viewed otherwise. "Tell me, if your precious Renly commanded you to kill your own father and stand by while thousands of men, women and children burned alive, would you have done it? Would you have kept your oath then?"