3 John 2:

Beloved, I wish above all things that thou mayest prosper and be in health, even as thy soul prospereth.

Notes on 3 John 2:

This verse should settle any argument as to what the will of God is in your life.  He wants you to be in health.  This is even better than getting sick and then getting healed!  Being in health means not to get sick in the first place.  But if you do get sick, you can know for sure that God’s will is for you to be in health!

The idea that this was only a greeting to Gaius is handled in an objection reply elsewhere.  If it were not God’s will to heal, this verse would not belong in the Bible at all.

See also:

The Baseball Diamond of Healing
God’s Mercy and Compassion
Your Body Is God’s Property
Healing and Prosperity
Don’t Get Sick When You Get Old
What’s Better Than Healing?  Health!
Some of God’s Promises Have Conditions
YOU Can Be Healed
Forever Settled
Who You Are and What You Have
Healing Is Not a Formula
Why Are You Here?
Objection: 3 John 2 Is a Greeting and Cannot Be Claimed as a Promise
Objection: The Word YOU in 3 John 2 Is Singular, Proving That It Was Only for Gaius, Not for the Whole Church
Objection: Faith Teachers Tell Us to Heal the Sick, Not Pray for Them, but John Prayed That Gaius Would Be Healthy (3 John 2)
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 We Are Subject to Death, We Are Subject to Sickness
Objection: Our Bodies Wear Out.  Even Some Healing Ministers Wear Glasses!
Objection: God Meets Your Spiritual Needs, Not Your Physical Needs
Objection: God Is Not a Vending Machine
Objection: Sickness, While Unpleasant, Is Used by God to Build Character
Objection: Paul Told Timothy to Drink Wine Instead of Believing God for Healing
Objection: If Healing Were in the Atonement, John Would Have Just Reminded Gaius That He Was Healed
Objection: If God Wanted Us to Enjoy Perfect Health NOW, He Would Have Already Given Us Immortal Bodies
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: If Hebrews 13:8 Really Means What Faith Healers Say It Does, Jesus Will Be Healing Us Forever in Heaven as He Did on the Earth
Objection: God’s Healing Covenant in the Law of Moses Was Only for the Jews
Objection: Jesus Let People Fail to Remind Them How Much They Needed Him
Objection: The Lord Kills, Brings Down to the Grave, and Makes Poor (1 Samuel 2:6-7)