Psalm 91:

He that dwelleth in the secret place of the most High shall abide under the shadow of the Almighty.
I will say of the LORD, He is my refuge and my fortress: my God; in him will I trust.
Surely he shall deliver thee from the snare of the fowler, and from the noisome pestilence.
He shall cover thee with his feathers, and under his wings shalt thou trust: his truth shall be thy shield and buckler.
Thou shalt not be afraid for the terror by night; nor for the arrow that flieth by day;
Nor for the pestilence that walketh in darkness; nor for the destruction that wasteth at noonday.
A thousand shall fall at thy side, and ten thousand at thy right hand; but it shall not come nigh thee.
Only with thine eyes shalt thou behold and see the reward of the wicked.
Because thou hast made the LORD, which is my refuge, even the most High, thy habitation;
There shall no evil befall thee, neither shall any plague come nigh thy dwelling.
For he shall give his angels charge over thee, to keep thee in all thy ways.
They shall bear thee up in their hands, lest thou dash thy foot against a stone.
Thou shalt tread upon the lion and adder: the young lion and the dragon shalt thou trample under feet.
Because he hath set his love upon me, therefore will I deliver him: I will set him on high, because he hath known my name.
He shall call upon me, and I will answer him: I will be with him in trouble; I will deliver him, and honour him.
With long life will I satisfy him, and shew him my salvation.

Notes on Psalm 91:

This Psalm promises not only healing but ongoing health to those who abide in God.  It promises nothing to those who don’t abide in God.  The promise covers all sicknesses, but you must meet its conditions.

It is easy to major on the dwell part but forget the say part.  I will say of the Lord, “He is my Refuge and my Fortress, my God in whom I trust.”  You don’t enjoy God’s blessings based only on who you believe He is in your life; you enjoy His blessings based on who you say He is.  If you won’t say something, you don’t really believe it!  (The blessings are legally yours, but you won’t walk in any of them beyond what you are willing to confess before men that God has given you.)  If you won’t say that He is your Healer, you won’t enjoy Him as Healer although you might appropriate other benefits.

God not only promises LONG life but also SATISFYING life.  You should just keep going in good health until you’re satisfied and ready to move on to heaven.  It is not SATISFYING to live a LONG life but have machines keep you alive or hobble along in a walker in the Twilight Acres Home for the Decrepit for years.

God promises in no uncertain terms to deliver you when you are in trouble (second to last verse above), and sickness is certainly a form of trouble.

The devil misquoted this Psalm to Jesus.  He skipped over the phrase to keep thee in all thy ways to make it sound like God would have His angels catch Jesus if He jumped off a high building (“For it is written, He shall give his angels charge over thee, to keep thee: And in their hands they shall bear thee up, lest at any time thou dash thy foot against a stone.”).  Jumping off high buildings is not part of anyone’s normal life, so the promise of angelic catching would not apply to anyone who did it, even Jesus.  The devil heard Jesus say what was written, so the devil quoted SOME of what was written himself – but Jesus knew what was ALSO written!

God not only doesn’t want you to have the pestilence, He doesn’t even want you to FEAR it.  Governments sometimes use FEAR to try to control the people.  If you won’t fear, you won’t be one of the ones they can manipulate when an epidemic is on the loose.

Not FEARING the pestilence means you don’t lose any sleep worrying because the person seated next to you on a long-haul flight had a cough and kept complaining he couldn’t taste his food, or if you were in a crowded elevator and someone next to you kept coughing, blowing his nose and sneezing.

The King James word adder refers to a snake; it does not mean that you will crush calculators under your feet.

See also:

Dealing with Fear
Don’t Get Sick When You Get Old
What’s Better Than Healing?  Health!
Some of God’s Promises Have Conditions
Healing and the Blood of Jesus
Ridiculous Healing Confession Bondage
I’m Aching All Over Because I Overexerted Myself While out of Shape.  Can I Claim Healing?
Can We Believe for a Dead Person to be Raised?
Is There an Appointed Time for Each Person to Die?
Objection: Saying That Healing Depends on You Creates a New Gospel of Works
Objection: Jonah Was Brought to the Point of Death So That He Would Learn Obedience
Objection: James’s Command Makes It Clear That We Should Expect to be Sick, Then Healed, Then Sick, Then Healed, Not Always Healthy
Objection: If You Could Always Get Healed, You Would Live Forever
Objection: Mark 16:9-20 Was Not in Some Early Manuscripts
Objection: Word of Faith Teachers Don’t Believe Psalm 91 – They Have Bodyguards
Objection: If You Could Always Claim I SHALL NOT DIE BUT LIVE (Psalm 118:17), You Could Live Forever
Objection: If We Are Subject to Death, We Are Subject to Sickness
Objection: So-and-So Had a Vision Where Jesus Said That a Relative Who Died in the Prime of Life Was Called Home by God and Had Finished His Course
Objection: Long Life Is Not a New Testament Blessing
Objection: James Said to Say, “If the Lord Will, We Shall Live.”  This Proves That We Cannot Claim Long Life.
Objection: We Are Not Promised Tomorrow
Objection: The New Testament Emphasizes Spiritual Blessings, Not Material Blessings
Objection: The Context of I SHALL NOT DIE, BUT LIVE (Psalm 118:17) Is Military Protection, Not Healing of Disease
Objection: Preaching Divine Healing Shipwrecks the Faith of Many
Objection: God Sometimes Calls a Saint Home Early Because He Knows People Will Get Saved at the Funeral
Objection: God Creates Evil (Isaiah 45:7), Kills, and Wounds (Deuteronomy 32:39)
Condition: Boils
Condition: Lice
Condition: Poisoning
Condition: Anything Else Not Listed Here
Mistake: Disobedience
Mistake: Reading Stupid Books