Jane Eyre...

"This was true: and while he spoke my very conscience and reason turned traitors against me, and charged me with crime in resisting him. They spoke almost as loud as Feeling: and that clamoured wildly. "Oh comply!" it said. "Think of his misery; think of his danger; look at his state when left alone---soothe him; save him; love him; tell him you love him and will be his. Who in the world cares for you? or who will be injured by what you do?"

Still indomitable was the reply: "I care for myself. The more solitary, the more friendless, the more unsustained I am, the more I will respect myself. I will keep the law given by God; sanctioned by man. I will hold to the principles received by me when I was sane, and not mad---as I am now. Laws and principles are not for times when there is no temptation; they are for such moments as this, when body and soul rise in mutiny against their rigour; stringent are they, inviolate they shall be. If at my individual convenience I might break then, what would be their worth? They have a worth--so I have always believed; and if I cannot believe it now it is because I am insane--quite insane, with my veins running fire, and my heart beating faster than I can count its throbs. Preconceived opinions, foregone determinations are all I have at this hour to stand by; there I plant my foot."

(Chapter 27)

Jane's understands and sees God as the giver of the laws by which she must live. When she can no longer trust herself to exercise good judgment, she looks to these principles as an objective point of reference.