Sickness, suffering, and death are work of an antagonistic power. Satan is the destroyer; God is the Restorer. MM 11.2
The words spoken to Israel are true today of those who recover health of body or health of soul: “I am the Lord that healeth thee.” MM 11.3
The desire of God for every human being is expressed in the words, “Beloved, I wish above all things that thou mayest prosper and be in health, even as thy soul prospereth.” MM 11.4
He it is who “forgiveth all thine iniquities; who healeth all thy diseases; who redeemeth thy life from destruction; who crowneth thee with loving-kindness and tender mercies.”—Counsels on Health, 168. MM 11.5