WATCH: Wife Sings 'Amazing Grace' to Husband in His Final Days

Through better and worse, sickness and health, Danielle Gibson never left her husband Tony's side.

This tender moment was caught on camera during one of Tony's final days of his battle against Creutzfeldt-Jakob disease. CJD is an extremely rare disease that causes dementia, memory problems and trouble walking. It's the human form of mad cow disease. Doctors say the disease progresses quickly and there is no treatment or cure.

Danielle sang to Tony to help comfort him during his battle with the disease.

Tony Gibson died on Jan. 30, leaving behind his wife and four daughters.



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