Let it be a settled fact: It is God's will to heal you. You have a right to healing as well as forgiveness when you believe. God said: I am the Lord who heals you (Ex. 15:26). If God said this, and God cannot lie, He meant it. What God says is true. So, healing is yours. Healing is part of the gospel and is to be preached throughout all the world and to every creature, to the end of the world (Mark 16:15; Matt. 28:20). Being part of the gospel, the divine blessing of physical healing is for all.
And there sat a certain man at Lystra, impotent in his feet, being a cripple from his mother's womb, who never had walked: the same heard Paul speak: who steadfastly beholding him, and perceiving that he had faith to be healed, said with a loud voice, Stand upright on your feet. And he leaped and walked. Acts 14:8-10 Paul must have preached the gospel of healing, because the lame man received faith to be healed while listening to Paul's message.
Faith cannot be exercised when one is undecided as to whether or not God will heal all. If He will not heal all, then we are forced to consider in every case: "I wonder if God wills to heal this one? Or is this one of the unfortunate ones whom God wills to remain sick and to suffer?" How could we ever pray the prayer of faith with such uncertainty in our minds?