Galatians 5:6:

For in Jesus Christ neither circumcision availeth any thing, nor uncircumcision; but faith which worketh by love.

See also:

Healing and the Holy Spirit
Why Does God Keep Using a Certain Healing Minister So Mightily When His Personal Life Is So Messed Up?
Objection: Hebrews 11:39 Proves That You Can Have Faith and NOT Receive the Promises
Objection: Preaching Divine Healing Shipwrecks the Faith of Many
Mistake: Walking out of Love