Jesus our Lamb suffered in two ways: He shed His blood on the cross for our salvation from sin and He bore the stripes on His body for our healing from sicknesses and diseases.
After they had striped Jesus and beat His body, the stripes by which we are healed; then they nailed Him to the cross and pierced His side. His blood ran down on the ground, the blood that was shed for remission of our sins.
Jesus' body was brutally beaten for us.

This wasn't the sacrifice made for our sins, but the bearing of our sicknesses, so that provision could be made for the healing of our bodies.
On Jesus' body were deep Roman lashes, tearing  pieces of flesh off of His back. They were the stripes that Isaiah and Peter said, we were healed.
Only Jesus who was sinless and sickless could put put away and pay the penalty for both. He did it because of His great love for us.
Jesus became our substitute. He became sinful with our sins, 2 Corinthians 5:21 and He became sick with our sicknesses Isaiah 53:5.
Three years of Jesus' life were spent in healing the sick and forgiving the sinful.
The same Jesus who said, arise and take up your bed and go your way into your house, also said, son your sins be forgiven you in Mark 2:5-11.
When Jesus began to preach the gospel of the kingdom, He proved to be the healer of sicknesses as well as the forgiver of sins.
He [Christ] was wounded for our transgression, He was bruised for our iniquities and with His stripes we are healed, Isaiah 53:5. Again we see provision for deliverance from both sin and sicknesses.
Provision has been made for deliverance from BOTH sin and sickness.
David, in Psalm 103:2-3 said,  Bless the Lord
O my soul, And forget not all His benefits: 
Who forgives all your iniquities,
Who heals all your diseases,
God's plan for us is redemption, restoration and salvation.

We are bought back and restored. It is as though we had never sinned. No more sin! No more sickness! No more separation from God!
Freedom from sickness and made well, strong and healthy has been the plan of God for all His obedient children throughout all the scriptures.
God was not only the deliverer from the destroyer for the Israelites, but also the healer of their diseases; He said, I am the Lord, I change not Malachi 3:6
Matthew 26:28  For this is My blood of the new covenant, which is shed for many for the remission of sins. 

Matthew 8:17 That it might be fulfilled which was spoken by Isaiah the prophet, saying: He Himself took our infirmities and bore our sicknesses.

We need not suffer from either sin or sickness again.
When Jesus Christ became our substitute, bearing our sins and our sicknesses, He did it in order that we might be delivered from them and their power.
Salvation from sin and healing from sickness are God's twin mercies provided to replace the spiritual and physical evils with the abundant and miracle life of Jesus Christ in the believer's spirit and body.
Sin and sickness are satan's twin evils, designed to tear down, to kill, and to destroy the human race, God's creation.

John 10:10  "The thief  [satan] does not come except to steal, and to kill, and to destroy. I [Jesus] have come that they may have life, and that they may have it more abundantly."
Taking part of the bread in communion by faith we can claim the promised benefit for our healing because Jesus' body was beaten for us by which He borne all of our physical sicknesses, diseases and pains. By His stripes we are healed.
Paul said that the life of Jesus would be made manifested in our mortal flesh. 2 Corinthians 4:11

He said that we, by faith, have become members of his body, of his flesh and of his bones. Ephesian 5:30

We partake of that same body, in type, each time we take of bread of the communion service. 1 Corinthians 10:16
There was a church in the New Testament at Corinth that was small in number. There were many weak and sickly members.

There was a larger church in the Old Testament of about 3 million in number, which lived under much more trying circumstances but there was not one feeble person among their tribes. It was the children of Israel.

Two groups of people, one under law the covenant of the blood of animals and one under the blood covenant of the Son of God. Those under the blood of animals faired better than the ones under the blood of Christ. 
God isn't purifying or glorifying His church through afflictions. He isn't testing His children's faith.

Sicknesses are due to the failure of being taught about the body of Christ as we have been taught about the blood of Christ. Christians are suffering from sicknesses and diseases that Jesus, as our substitute, has already borne for us, Matthew 8:17 . . .that it might be fulfilled which was spoken by Isaiah the prophet, saying: He Himself took our infirmities and bore our sicknesses.”
Paul told the church at Corinth that "many were weak and sickly among them because they were not discerning the Lord's body"
1 Corinthians 11:29-30.

That answers the question of so much sickness in the churches today.
God's attitude towards sickness is He places no premium on it.

He doesn't want any of us to suffer sickness for His glory. Sickness doesn't glorify the Father any more than sin glorifies Him
People have always used methods, but God uses people.

He chooses ordinary people. 
Esther 4:14 ". . . and who knows whether you are come to the kingdom for such a time as this?"
Luke 1:37 
"For with God nothing shall be impossible."

Matthew 17:20 
". . . . and nothing shall be impossible unto you."
Happy New Year 2015