I will keep the law given by God; sanctioned by man.

The line "I will keep the law given by God; sanctioned by man" is Jane Eyre's definitive ethical manifesto, spoken in the crucible of her greatest temptation. Uttered in Chapter XXVII, after Mr. Rochester has revealed the existence of his mad wife and pleaded with Jane to remain with him as his de facto partner, the statement is not a passive recitation of dogma but an active, agonized self-command. It represents the climax of a sustained internal battle between passion and principle, a battle that defines Jane's character and shapes the novel's moral architecture.

Context and the Moment of Crisis

The declaration arises from a specific, desperate situation. Mr. Rochester, having been thwarted at the altar by the revelation of his marriage to Bertha Mason, argues that his union with the madwoman was a fraud and that he is morally free to love Jane. He offers her a life together in the south of France, a paradise of illicit love. Jane, who loves him profoundly and has already accepted his proposal, is torn. Her "conscience and reason turned traitors against me," she recalls, and a voice within her clamors, "Oh, comply!" It is in this moment of near-surrender that she plants her foot and delivers her counter-declaration, not as a rebuke to Rochester but as a desperate anchor for her own reeling soul.

The Content of the Law

Jane's law is twofold. The "law given by God" refers to the divine prohibition against adultery, a commandment she believes is inviolable regardless of circumstance. The law "sanctioned by man" is the social and legal institution of marriage, which, however flawed in Rochester's case, remains a binding contract in her eyes. She refuses to accept Rochester's argument that his prior marriage is null in spirit; for Jane, the legal fact of Bertha's existence is an insuperable barrier. This is not a legalistic quibble but a profound conviction that moral order depends on the integrity of publicly recognized vows. To break them, even for love, would be to participate in a lie and to corrupt the very foundation of the relationship she values.

The Principle of Self-Respect

Crucially, Jane's adherence to law is inseparable from her commitment to self-respect. Immediately before the quoted line, she declares, "I care for myself. The more solitary, the more friendless, the more unsustained I am, the more I will respect myself." This reframes the moral choice: it is not merely about obeying an external rule but about preserving the internal coherence of her own identity. To become Rochester's mistress would be to betray the person she has struggled to become—an independent, principled woman who refused to be crushed at Gateshead or Lowood. The law, for Jane, is the bulwark against the dissolution of the self into mere passion. She will not purchase happiness at the price of her own moral integrity.

The Role of the Law in Jane's Narrative Identity

This declaration is the culmination of a lifelong pattern. From her childhood defiance of the tyrannical John Reed and the unjust Mrs. Reed, through her friendship with Helen Burns (who taught a doctrine of passive endurance), to her years at Lowood under the harsh regime of Mr. Brocklehurst, Jane has consistently sought a framework of justice and principle. Her rebellion at Gateshead was against arbitrary cruelty; her submission at Lowood was to a system she eventually found to have value. At Thornfield, she faces the subtlest test: a loving master who asks her to set aside the very principles that have made her worthy of his love. Her refusal to do so is the act that completes her moral education. She does not reject love; she insists that love must be housed within a lawful, honorable form.

Consequences and Thematic Significance

The immediate consequence of Jane's adherence to this law is her flight from Thornfield, a period of near-starvation and homelessness. This suffering, however, is not a punishment but a purification. It leads her to the Rivers family, to an inheritance, and to a position of genuine independence. Only after she has proven her ability to live by her principles—refusing even St. John Rivers's loveless proposal of marriage—is she spiritually and circumstantially ready for a reunion with Rochester. The law she kept, therefore, does not deny her happiness but makes possible a happiness that is morally coherent. The line "I will keep the law given by God; sanctioned by man" thus stands as the novel's central thesis: that true freedom and love are found not in the abandonment of principle but in its most rigorous observance.