Acts 10:38 "And you no doubt know that Jesus of Nazareth was anointed by God with the Holy Ghost and with power, and He went about doing good and healing all who were oppressed by the demons, for God was with Him."
Healing is part of our covenant rights!
As Christians we are part of a covenant; that's an agreement made by God with man, through Jesus. God represented Heaven and Jesus represented man, (you and me) in that agreement. God cannot fail and Jesus did not fail so therefore the New Covenant cannot fail. The new covenant is a health covenant (as well as many other aspects).
3 John 2 "I want that you should prosper in every way and that your body be healthy as your soul (mind and will) prospers."
The Old Testament people (before Calvary) had healing. Everyone Jesus healed in the Gospels received what they were already entitled to under the old covenant, but when Jesus hung on the cross at Calvary He said in John 19:30 "It is finished."
He meant the old covenant had finished. He had brought it all to completion and the new covenant had arrived. No longer only healing, but divine health became available because of Calvary.
God is interested in your physical well-being! In fact Divine Health is all His idea.
He is as interested in your health just as much as he is interested in your spiritual condition. Calvary took care of the physical as well as the spiritual. In Isaiah 53 the prophet looks down through the corridor of time and describes Jesus at Calvary hundreds of years later.
Note Isa 53:3-5 Amplified Bible "He was despised and rejected and forsaken by men, a man of sorrows and pains, and acquainted with grief and sickness. And like one from whom men hid their faces He was despised, and we did not appreciate His worth or have any esteem for Him.
4 Surely He has borne our grief's (sicknesses, weaknesses and distresses) and carried our sorrows and pains - yet we (ignorantly) considered Him stricken, smitten, and afflicted by God (as if with leprosy).
5 But He was wounded for our transgressions; He was bruised for our guilt and iniquities. The chastisement (needful to obtain) peace and well-being for us was upon Him, and with the stripes (that wounded) Him we are healed and made whole."
1 Peter 2:24 Amplified Bible "He personally bore our sins in His (own) body on the tree (as an altar and offered Himself on it) that we might die (cease to exist) to sin and live to righteousness. By His wounds you have been healed."
Psalm 107:20 Amplified Bible "He sends forth his word and heals them and rescues them from the pit and destruction."
Isaiah 58:8 Amplified Bible "Then your light shall break forth like the morning, and your health (your restoration and the power of a new life shall spring forth speedily, your righteousness (your rightness and justice, and your right relationship with God) shall go before you (conducting you to peace and prosperity) and the glory of the Lord shall be your rear guard."
Just remember this faith is what you have when you don't have what you want!
When you have what you want you don't need faith for it any more.
You can walk in health by walking in God's Word. Take God's Word for the state of your body, not what your body tells you. Your body has nothing to tell you but you have something to tell your body!