When coming to God for healing – every believer must be convinced that it is God’s will to heal until one has lived out the allotted span of life.

FF BOSWORTH
CHRIST THE HEALER
THE FIRST STEP

The first step toward being healed is the same as the first step toward salvation, or any other blessing that God promises. The sick person needs to know what the Bible clearly teaches and that it is God’s will to heal until one has lived out the allotted span of life (seventy years, Ps. 90:10). Each individual sufferer must be convinced by the Word of God that his or her healing is the will of God. It is impossible to have real faith for healing as long as there is the slightest doubt as to it being God’s will.

It is impossible to boldly claim by faith a blessing that we are not certain God offers. The power of God can be claimed only where the will of God is known. For instance, it would be next to impossible to get a sinner to “believe unto righteousness” before you had fully convinced him that it was God’s will to save him. Faith begins where the will of God is known. Faith must rest on the will of God alone, not on our desires or wishes.

Appropriating faith is not believing that God can, but that He will. Those who claim to believe in healing, but say one word in favor of it and ten words against it, cannot produce faith for healing.
FAITH IS EXPECTING COD TO DO HIS WILL

When God commands us to pray for the sick, He means for us to pray with faith. We could not do this if we did not know His will in the matter. Until a person knows God’s will, he or she has no basis for faith. Faith is expecting God to do what we know it is His will to do. It is not hard, when we have faith, to get God to do His will.

When we know it is His will, it is not difficult for us to believe that He will do what we are sure He wants to do. It is in this way that every saved person has experienced the still greater miracle of the new birth. There can be no appropriation by faith until we are made to know by the Gospel what God has provided for us.
There is no doctrine more emphatically taught throughout the Word of God than that through the Atonement of Christ both salvation and bodily healing were provided. It is God’s will to take away the sickness of those that serve Him, and to fulfill the number of their days according to His promise (Exod. 23:25-26). As the types in Leviticus 14 and 15 show that it was invariably through atonement that sickness was healed under the law of Moses, so Matthew 8:17 definitely states that Jesus healed all diseases on the ground of Atonement. This Scripture shows us that Christ’s reason for making no exceptions while healing the sick who thronged Him, was His Atonement. He made His Atonement for all Adam’s race, including you. As multitude after multitude pressed upon Him “to hear Him and to be healed of their diseases,” it is repeatedly stated throughout the Gospels, He healed them all” (read Matt. 4:24; 12:15; 14:14; Luke 4:40; Acts 10:38). He could make no exceptions. Why? Because in His coming Atonement, He “Himself took our infirmities.” Since it is “our” infirmities He bore, it requires the healing of all to fulfill this prophecy. God carefully put this in such simple language that we would have to misquote it to leave ourselves out. What Calvary provides is for all! God’s way of saving the soul, of healing the body, and of doing everything else He wants to do is to send His Word, His promise. He then keeps the promise wherever it produces faith. The divine procedure in healing is stated in the text, “He sent his word, and healed them, and delivered them from their destructions” (Ps. 107:20).
It is “the word of God, which effectually worketh” in them that believe. It is “health to all their flesh” (1 Thess. 2:13; Prov. 4:22).
Just as a little girl’s faith for a new dress comes by hearing the promise of her mother to buy it next Saturday, so our faith for healing comes by hearing God’s Word. This is His promise that He will do it. Both the little girl’s faith and ours “cometh by hearing.” The little girl could not, and would not be expected to have faith for the new dress until her mother promised it. So we cannot, nor are we expected to, have faith for healing or salvation or any other blessing, until that faith comes by hearing the Word (the promise) of God to do it.
How could anyone find “justification by faith” until it was preached to him? How could anyone find healing by faith until it was preached to him? It is the Scriptures that are able to make men wise unto salvation. We must see that the Creator and Redeemer of the body is also its Physician before we can have reason to expect healing.